diff --git a/contrib/vim/indent/gmid.vim b/contrib/vim/indent/gmid.vim
index ea05ce5..5dc2955 100644
--- a/contrib/vim/indent/gmid.vim
+++ b/contrib/vim/indent/gmid.vim
@@ -9,3 +9,5 @@ setlocal indentexpr=
 setlocal cindent
 " Just make sure that the comments are not reset as defs would be.
 setlocal cinkeys-=0#
+" And indentation works correctly without semicolons.
+setlocal cinoptions=+0