diff --git a/mm/slub.c b/mm/slub.c
index 13857910055b..1de695200efe 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1429,6 +1429,8 @@ static int __init setup_slub_debug(char *str)
 out:
 	if (slub_debug != 0 || slub_debug_string)
 		static_branch_enable(&slub_debug_enabled);
+	else
+		static_branch_disable(&slub_debug_enabled);
 	if ((static_branch_unlikely(&init_on_alloc) ||
 	     static_branch_unlikely(&init_on_free)) &&
 	    (slub_debug & SLAB_POISON))