diff --git a/include/linux/slab.h b/include/linux/slab.h
index 9aa90a6..4110391 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -180,7 +180,7 @@
  */
 static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 {
-	if (n != 0 && size > ULONG_MAX / n)
+	if (size != 0 && n > ULONG_MAX / size)
 		return NULL;
 	return __kmalloc(n * size, flags | __GFP_ZERO);
 }