diff --git a/libraries/lxqt-qtplugin/lxqt-qtplugin.SlackBuild b/libraries/lxqt-qtplugin/lxqt-qtplugin.SlackBuild
index 8bdfdb7ec8e..a1f1f6f317b 100644
--- a/libraries/lxqt-qtplugin/lxqt-qtplugin.SlackBuild
+++ b/libraries/lxqt-qtplugin/lxqt-qtplugin.SlackBuild
@@ -82,6 +82,7 @@ cd build
     -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
     -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
     -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
     -DCMAKE_BUILD_TYPE=Release ..
   make
   make install DESTDIR=$PKG