diff --git a/kernel/fork.c b/kernel/fork.c
index 2fd9c431bf45..2c99d39e2bc0 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1595,7 +1595,7 @@ static int copy_io(unsigned long clone_flags, struct task_struct *tsk)
 	return 0;
 }
 
-static int copy_sighand(unsigned long clone_flags, struct task_struct *tsk)
+static int copy_sighand(u64 clone_flags, struct task_struct *tsk)
 {
 	struct sighand_struct *sig;