1 files changed, 1 insertions, 1 deletions
diff --git a/gc.c b/gc.c
index 9328d76eeb..183e96ec86 100644
--- a/gc.c
+++ b/gc.c
@@ -2101,7 +2101,7 @@ rb_gc_finalize_deferred(void)
 }
 
 static void
-gc_finalize_deferred_register()
+gc_finalize_deferred_register(void)
 {
     if (rb_postponed_job_register_one(0, gc_finalize_deferred, 0) == 0) {
 	rb_bug("gc_finalize_deferred_register: can't register finalizer.");