diff --git a/doc/user/subtelties.rst b/doc/user/subtelties.rst
index 5bdb3329..37ba7fda 100644
--- a/doc/user/subtelties.rst
+++ b/doc/user/subtelties.rst
@@ -68,7 +68,7 @@ The ``sproduce`` function makes it possible to produce modules generated algorit
     m = ParamModule('toto')
     sproduce (Lstring([m]))
 
-Advantage is that modules can be created on the fly. However, if you then try to math the produced module with
+Advantage is that modules can be created on the fly. However, if you then try to match the produced module with
 rules such as the following one, it may not work.::
 
     toto --> F
@@ -90,4 +90,4 @@ Thus the rule::
 
     toto --> F
 
-will be correctly interpreted as one module toto being transformed into one F.
\ No newline at end of file
+will be correctly interpreted as one module toto being transformed into one F.