diff --git a/vm_core.h b/vm_core.h
index faab30b1d7..af9ec2b8ef 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -950,7 +950,7 @@ typedef struct rb_thread_struct {
     enum {
         thread_invoke_type_none = 0,
         thread_invoke_type_proc,
-        thread_invoke_type_func,
+        thread_invoke_type_func
     } invoke_type;
 
     /* statistics data for profiler */