diff --git a/docs/doxygen/overviews/roughguide.h b/docs/doxygen/overviews/roughguide.h
index a27c6cbb1d..3f804ff0d2 100644
--- a/docs/doxygen/overviews/roughguide.h
+++ b/docs/doxygen/overviews/roughguide.h
@@ -32,7 +32,7 @@ resized by the user -- and to do this you use wxSizer-derived classes, such as
 wxBoxSizer and wxFlexGridSizer, to layout everything correctly.
 
 Instances of wxDialog can also be used for controls and they have the advantage
-of not requiring a separate panel inside the,.
+of not requiring a separate panel inside them.
 
 Instead of creating a dialog box and populating it with items, it is possible
 to choose one of the convenient common dialog classes, such as wxMessageDialog