diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
index 97292f9ce5..7a6e2b7ad8 100644
--- a/Source/cmFileCommand.cxx
+++ b/Source/cmFileCommand.cxx
@@ -1028,8 +1028,6 @@ protected:
     {
     }
   };
-  struct MatchRule;
-  friend struct MatchRule;
   struct MatchRule
   {
     cmsys::RegularExpression Regex;