diff --git a/src/proto/misc1.pro b/src/proto/misc1.pro
index e7a820f..2a7b87e 100644
--- a/src/proto/misc1.pro
+++ b/src/proto/misc1.pro
@@ -76,7 +76,7 @@
 pos_T *find_start_comment __ARGS((int ind_maxcomment));
 void do_c_expr_indent __ARGS((void));
 int cin_islabel __ARGS((int ind_maxcomment));
-int cin_iscase __ARGS((char_u *s));
+int cin_iscase __ARGS((char_u *s, int strict));
 int cin_isscopedecl __ARGS((char_u *s));
 int get_c_indent __ARGS((void));
 int get_expr_indent __ARGS((void));