1 files changed, 1 insertions, 0 deletions
diff --git a/ext/tk/tkutil.c b/ext/tk/tkutil.c
index efa3fd735d..9d4ca0a9d0 100644
--- a/ext/tk/tkutil.c
+++ b/ext/tk/tkutil.c
@@ -33,6 +33,7 @@ tk_s_new(argc, argv, klass)
     return obj;
 }
 
+void
 Init_tkutil()
 {
     VALUE mTK = rb_define_module("TkUtil");