diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index cc35997eae..c2608c7f62 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -2796,7 +2796,13 @@ vm_search_super_method(const rb_control_frame_t *reg_cfp, struct rb_call_info *c
         CC_SET_FASTPATH(cc, vm_call_method_missing, TRUE);
     }
     else {
-	/* TODO: use inline cache */
+#if OPT_INLINE_METHOD_CACHE
+        if (LIKELY(GET_GLOBAL_METHOD_STATE() == cc->method_state && RCLASS_SERIAL(klass) == cc->class_serial &&
+                   ci->mid == cc->me->def->original_id))
+            return;
+        cc->method_state = GET_GLOBAL_METHOD_STATE();
+        cc->class_serial = RCLASS_SERIAL(klass);
+#endif
 	cc->me = rb_callable_method_entry(klass, ci->mid);
         CC_SET_FASTPATH(cc, vm_call_super_method, TRUE);
     }