diff --git a/createrelease b/createrelease
index eae68a8ed..a24a8efa2 100755
--- a/createrelease
+++ b/createrelease
@@ -9,7 +9,7 @@
 #   lupdate gui.pro
 #
 # Update copyright year
-# git diff 1.90 | grep '^diff --git a/' | sed 's|.* b/||' | xargs sed -i 's/Copyright (C) 2007-201./Copyright (C) 2007-2020/'
+# git diff 1.90 -- */*.cpp */*.h | grep '^diff --git a/' | sed 's|.* b/||' | xargs sed -i 's/Copyright (C) 2007-201./Copyright (C) 2007-2020/'
 # git diff | grep '^diff --git a/'
 #
 # Make sure "cppcheck --errorlist" works. For example with: