diff --git a/doc/man/es/mc.1.in b/doc/man/es/mc.1.in
index 7870206d8..b92b734a6 100644
--- a/doc/man/es/mc.1.in
+++ b/doc/man/es/mc.1.in
@@ -103,7 +103,7 @@ como un alias para el correspondiente guión de shell.
 .I \-s, \-\-slow
 Activa el modo para terminales lentos. En este modo el programa no
 dibuja bordes con líneas de caracteres y desactiva el modo detallado.
-Si no se rellena la sección [Lines] el marco pseudo\-gráfico estará
+Si no se rellena la sección [lines] el marco pseudo\-gráfico estará
 formado por espacios; en caso contrario el marco se contruye con
 caracteres de texto según los parámetros siguientes:
 .TP
@@ -3723,14 +3723,14 @@ Colores\&.
 .\"NODE "  Skins lines"
 .SH "  Trazado de líneas"
 Trazos de líneas de la sección
-.B [Lines]
+.B [lines]
 del archivo de skins.  Por defecto se utilizan líneas sencillas, pero
 se pueden redefinir empleando cualquier símbolo utf\-8 (por ejemplo,
 líneas dobles).
 
 .PP
 Descripción de parámetros de la sección
-.BR [Lines] :
+.BR [lines] :
 .TP
 .I lefttop
 esquina superior izquierda.
diff --git a/doc/man/ru/mc.1.in b/doc/man/ru/mc.1.in
index 49eca6279..6f0467646 100644
--- a/doc/man/ru/mc.1.in
+++ b/doc/man/ru/mc.1.in
@@ -4396,13 +4396,13 @@ menuhotsel=yellow;black;bold+underline
 .\"NODE "  Skins lines"
 .SH "  Линии для отрисовки рамок"
 Линии задаются в секции
-.B [Lines]
+.B [lines]
 в скин\-файле. По умолчанию используются одинарные линии, но возможно
 переназначить на использование любых utf\-8 символов, похожих на линии
 
 .PP
 Описание параметров секции
-.BR [Lines] :
+.BR [lines] :
 .TP
 .I lefttop
 изображение левого верхнего угла рамки
diff --git a/doc/man/sr/mc.1.in b/doc/man/sr/mc.1.in
index c64104362..27026b7ce 100644
--- a/doc/man/sr/mc.1.in
+++ b/doc/man/sr/mc.1.in
@@ -3810,13 +3810,13 @@ menuhotsel=yellow;black;bold+underline
 .\"NODE "  Skins lines"
 .SH "  Линије за исцртавање"
 Линије се подешавају у одељку
-.B [Lines]
+.B [lines]
 датотеке скина. Подразумевано, користе се једноструке линије, али можете
 поставити да се користе било који utf\-8 симболи (на пример, линије).
 
 .PP
 Описи параметара
-.BR [Lines] :
+.BR [lines] :
 .TP
 .I lefttop
 горњи леви фрагмент линије.
diff --git a/lib/skin/hc-skins.c b/lib/skin/hc-skins.c
index ef720dea3..66223a6f3 100644
--- a/lib/skin/hc-skins.c
+++ b/lib/skin/hc-skins.c
@@ -33,7 +33,7 @@
 
 /*** file scope macro definitions ****************************************************************/
 
-#define set_lines(x, y) mc_config_set_string (mc_skin->config, "Lines", x, y)
+#define set_lines(x, y) mc_config_set_string (mc_skin->config, "lines", x, y)
 
 /*** file scope type declarations ****************************************************************/
 
diff --git a/lib/skin/lines.c b/lib/skin/lines.c
index e064022e0..35947b529 100644
--- a/lib/skin/lines.c
+++ b/lib/skin/lines.c
@@ -91,7 +91,12 @@ skin_get_char (mc_skin_t *mc_skin, const char *name, gunichar def, mc_tty_char_t
     estr_t conv_res;
     char *value_utf8;
 
-    value_utf8 = mc_config_get_string_raw (mc_skin->config, "Lines", name, NULL);
+    value_utf8 = mc_config_get_string_raw (mc_skin->config, "lines", name, NULL);
+    if (value_utf8 == NULL)
+    {
+        // it was called "Lines" (uppercase L) in mc <= 4.8.33, accept that for compatibility
+        value_utf8 = mc_config_get_string_raw (mc_skin->config, "Lines", name, NULL);
+    }
     if (value_utf8 != NULL)
     {
         c = g_utf8_get_char_validated (value_utf8, -1);
diff --git a/misc/skins/README.txt b/misc/skins/README.txt
index 9c7e57eb4..d1f0462e5 100644
--- a/misc/skins/README.txt
+++ b/misc/skins/README.txt
@@ -320,7 +320,7 @@ Character sections
 The following keys define characters to be shown at various positions on the
 display. The characters in the skin files need to be encoded in UTF-8.
 
-    [Lines]
+    [lines]
         Frame characters used all throughout mc.
 
         horiz
diff --git a/misc/skins/dark.ini b/misc/skins/dark.ini
index 4fb4c473d..b70ed5d40 100644
--- a/misc/skins/dark.ini
+++ b/misc/skins/dark.ini
@@ -1,7 +1,7 @@
 [skin]
     description = Dark skin
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/darkfar.ini b/misc/skins/darkfar.ini
index ae50dd648..9e87f8bbf 100644
--- a/misc/skins/darkfar.ini
+++ b/misc/skins/darkfar.ini
@@ -1,7 +1,7 @@
 [skin]
     description = Dark Far skin
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/default.ini b/misc/skins/default.ini
index 0f0cb7d18..635c46916 100644
--- a/misc/skins/default.ini
+++ b/misc/skins/default.ini
@@ -1,7 +1,7 @@
 [skin]
     description = Standard skin
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/double-lines.ini b/misc/skins/double-lines.ini
index 0b81b838a..4705584ed 100644
--- a/misc/skins/double-lines.ini
+++ b/misc/skins/double-lines.ini
@@ -1,7 +1,7 @@
 [skin]
     description = Far-like skin
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/featured-plus.ini b/misc/skins/featured-plus.ini
index d66992115..520c751f8 100644
--- a/misc/skins/featured-plus.ini
+++ b/misc/skins/featured-plus.ini
@@ -1,7 +1,7 @@
 [skin]
     description = Enhanced standard skin with alternative directory and file select/mark colors
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/featured.ini b/misc/skins/featured.ini
index c663cc255..25a3f13ed 100644
--- a/misc/skins/featured.ini
+++ b/misc/skins/featured.ini
@@ -1,7 +1,7 @@
 [skin]
     description = Enhanced standard skin
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/gotar.ini b/misc/skins/gotar.ini
index ee1449384..5f979b322 100644
--- a/misc/skins/gotar.ini
+++ b/misc/skins/gotar.ini
@@ -1,7 +1,7 @@
 [skin]
     description = GoTaR @PLD Linux
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/gray-green-purple256.ini b/misc/skins/gray-green-purple256.ini
index f2b034773..4fda66a55 100644
--- a/misc/skins/gray-green-purple256.ini
+++ b/misc/skins/gray-green-purple256.ini
@@ -2,7 +2,7 @@
     description = Gray-Green-Purple Skin
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/gray-orange-blue256.ini b/misc/skins/gray-orange-blue256.ini
index 600c32c38..d30bdfa92 100644
--- a/misc/skins/gray-orange-blue256.ini
+++ b/misc/skins/gray-orange-blue256.ini
@@ -2,7 +2,7 @@
     description = Gray-Orange-Blue Skin
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/julia256.ini b/misc/skins/julia256.ini
index c85473d98..c41b65cc2 100644
--- a/misc/skins/julia256.ini
+++ b/misc/skins/julia256.ini
@@ -4,7 +4,7 @@
     description = Dark skin with calm colors and good contrast
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/julia256root.ini b/misc/skins/julia256root.ini
index f87854c39..15141d5b6 100644
--- a/misc/skins/julia256root.ini
+++ b/misc/skins/julia256root.ini
@@ -4,7 +4,7 @@
     description = Dark skin with calm colors and good contrast (root)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/mc46.ini b/misc/skins/mc46.ini
index b0ecc7f2e..d76089d17 100644
--- a/misc/skins/mc46.ini
+++ b/misc/skins/mc46.ini
@@ -1,7 +1,7 @@
 [skin]
     description = mc-4.6 skin
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16-defbg-thin.ini b/misc/skins/modarcon16-defbg-thin.ini
index 183732736..1a54c9a00 100644
--- a/misc/skins/modarcon16-defbg-thin.ini
+++ b/misc/skins/modarcon16-defbg-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16-DefaultBG (user)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16-defbg.ini b/misc/skins/modarcon16-defbg.ini
index 31f23fec6..d21ee6142 100644
--- a/misc/skins/modarcon16-defbg.ini
+++ b/misc/skins/modarcon16-defbg.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16-DefaultBG (user)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16-thin.ini b/misc/skins/modarcon16-thin.ini
index 241552556..5eb93e084 100644
--- a/misc/skins/modarcon16-thin.ini
+++ b/misc/skins/modarcon16-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16 (user)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16.ini b/misc/skins/modarcon16.ini
index 307c44aec..782d5f929 100644
--- a/misc/skins/modarcon16.ini
+++ b/misc/skins/modarcon16.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16 (user)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16root-defbg-thin.ini b/misc/skins/modarcon16root-defbg-thin.ini
index fbbdfd7f2..3ad88af4f 100644
--- a/misc/skins/modarcon16root-defbg-thin.ini
+++ b/misc/skins/modarcon16root-defbg-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16root-DefaultBG (root)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16root-defbg.ini b/misc/skins/modarcon16root-defbg.ini
index 62a67f1f6..4fc5eb88a 100644
--- a/misc/skins/modarcon16root-defbg.ini
+++ b/misc/skins/modarcon16root-defbg.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16root-DefaultBG (root)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16root-thin.ini b/misc/skins/modarcon16root-thin.ini
index 25cf51fab..1eabe8af9 100644
--- a/misc/skins/modarcon16root-thin.ini
+++ b/misc/skins/modarcon16root-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16root (root)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarcon16root.ini b/misc/skins/modarcon16root.ini
index 1208a12b5..a588a6748 100644
--- a/misc/skins/modarcon16root.ini
+++ b/misc/skins/modarcon16root.ini
@@ -43,7 +43,7 @@
     description = MoDarCon16root (root)
     256colors = false
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256-defbg-thin.ini b/misc/skins/modarin256-defbg-thin.ini
index ab117661e..4e9d78776 100644
--- a/misc/skins/modarin256-defbg-thin.ini
+++ b/misc/skins/modarin256-defbg-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256-DefaultBG (user)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256-defbg.ini b/misc/skins/modarin256-defbg.ini
index 51645d1a7..2cfd41431 100644
--- a/misc/skins/modarin256-defbg.ini
+++ b/misc/skins/modarin256-defbg.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256-DefaultBG (user)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256-thin.ini b/misc/skins/modarin256-thin.ini
index 3aad78afc..3729276d6 100644
--- a/misc/skins/modarin256-thin.ini
+++ b/misc/skins/modarin256-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256 (user)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256.ini b/misc/skins/modarin256.ini
index 28b17eb28..69394706c 100644
--- a/misc/skins/modarin256.ini
+++ b/misc/skins/modarin256.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256 (user)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256root-defbg-thin.ini b/misc/skins/modarin256root-defbg-thin.ini
index 15631a919..9f745df53 100644
--- a/misc/skins/modarin256root-defbg-thin.ini
+++ b/misc/skins/modarin256root-defbg-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256root-DefaultBG (root)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256root-defbg.ini b/misc/skins/modarin256root-defbg.ini
index 4ed0abaa5..f06b4c557 100644
--- a/misc/skins/modarin256root-defbg.ini
+++ b/misc/skins/modarin256root-defbg.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256root-DefaultBG (root)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256root-thin.ini b/misc/skins/modarin256root-thin.ini
index f686b47c9..66c71b169 100644
--- a/misc/skins/modarin256root-thin.ini
+++ b/misc/skins/modarin256root-thin.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256root (root)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/modarin256root.ini b/misc/skins/modarin256root.ini
index 87aeef175..3ffdd5c8b 100644
--- a/misc/skins/modarin256root.ini
+++ b/misc/skins/modarin256root.ini
@@ -43,7 +43,7 @@
     description = MoDarIn256root (root)
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/nicedark.ini b/misc/skins/nicedark.ini
index 032833ce4..0f18c5aab 100644
--- a/misc/skins/nicedark.ini
+++ b/misc/skins/nicedark.ini
@@ -1,7 +1,7 @@
 [skin]
     description = Nice and Dark
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/sand256.ini b/misc/skins/sand256.ini
index f38a496e2..0930ace00 100644
--- a/misc/skins/sand256.ini
+++ b/misc/skins/sand256.ini
@@ -2,7 +2,7 @@
     description = Sand skin using 256 colors
     256colors = true
 
-[Lines]
+[lines]
     horiz = ╌
     vert = ┆
     lefttop = ╭
diff --git a/misc/skins/seasons-autumn16M.ini b/misc/skins/seasons-autumn16M.ini
index aa4f3b602..2eccaa3ae 100644
--- a/misc/skins/seasons-autumn16M.ini
+++ b/misc/skins/seasons-autumn16M.ini
@@ -6,7 +6,7 @@
     description = Four Seasons – Autumn
     truecolors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/seasons-spring16M.ini b/misc/skins/seasons-spring16M.ini
index 33be9c450..44b79582e 100644
--- a/misc/skins/seasons-spring16M.ini
+++ b/misc/skins/seasons-spring16M.ini
@@ -6,7 +6,7 @@
     description = Four Seasons – Spring
     truecolors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/seasons-summer16M.ini b/misc/skins/seasons-summer16M.ini
index 593afebec..0192d18ba 100644
--- a/misc/skins/seasons-summer16M.ini
+++ b/misc/skins/seasons-summer16M.ini
@@ -6,7 +6,7 @@
     description = Four Seasons – Summer
     truecolors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/seasons-winter16M.ini b/misc/skins/seasons-winter16M.ini
index d12d8e9b8..b5a7f203d 100644
--- a/misc/skins/seasons-winter16M.ini
+++ b/misc/skins/seasons-winter16M.ini
@@ -6,7 +6,7 @@
     description = Four Seasons – Winter
     truecolors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/xoria256-thin.ini b/misc/skins/xoria256-thin.ini
index 8e30f2a24..6808c3971 100644
--- a/misc/skins/xoria256-thin.ini
+++ b/misc/skins/xoria256-thin.ini
@@ -11,7 +11,7 @@
     description = Xoria256-Thin
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/xoria256.ini b/misc/skins/xoria256.ini
index a52915042..fab80ed6a 100644
--- a/misc/skins/xoria256.ini
+++ b/misc/skins/xoria256.ini
@@ -11,7 +11,7 @@
     description = Xoria256
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/xoria256root-thin.ini b/misc/skins/xoria256root-thin.ini
index b1fb66cba..fedd67b9d 100644
--- a/misc/skins/xoria256root-thin.ini
+++ b/misc/skins/xoria256root-thin.ini
@@ -11,7 +11,7 @@
     description = Xoria256root-Thin
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/yadt256-defbg.ini b/misc/skins/yadt256-defbg.ini
index ad4bb455d..01b4cd7fd 100644
--- a/misc/skins/yadt256-defbg.ini
+++ b/misc/skins/yadt256-defbg.ini
@@ -10,7 +10,7 @@
     description = Yet Another Dark Theme, 256 colors, default background
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌
diff --git a/misc/skins/yadt256.ini b/misc/skins/yadt256.ini
index a3d2c22fe..0d99e4a2c 100644
--- a/misc/skins/yadt256.ini
+++ b/misc/skins/yadt256.ini
@@ -9,7 +9,7 @@
     description = Yet Another Dark Theme, 256 colors, black background
     256colors = true
 
-[Lines]
+[lines]
     horiz = ─
     vert = │
     lefttop = ┌