diff --git a/ko_adapt.c b/ko_adapt.c
index a094b2805adfca6bd396a75afcc15d29d5895e12..c57970348eb3bb9122521ef8457172c6bdfb5103 100644
--- a/ko_adapt.c
+++ b/ko_adapt.c
@@ -110,7 +110,7 @@ struct workqueue_attrs *koadpt_alloc_workqueue_attrs(gfp_t gfp_mask)
 	(void)gfp_mask;
 
 	attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
-	if (!attrs) {
+	if (ZERO_OR_NULL_PTR((unsigned long)(uintptr_t)attrs)) {
 		tloge("alloc workqueue attr fail\n");
 		return NULL;
 	}