1 files changed, 1 insertions, 1 deletions
diff --git a/vm.c b/vm.c
index 41e9542bde..3c50daa2fe 100644
--- a/vm.c
+++ b/vm.c
@@ -88,7 +88,7 @@ static vm_state_version_t ruby_vm_sequence = 1;
 #define PROCDEBUG 0
 
 vm_state_version_t
-rb_next_class_sequence()
+rb_next_class_sequence(void)
 {
     return NEXT_CLASS_SEQUENCE();
 }