diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 160b2acba8db..908bae849843 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -284,10 +284,10 @@ static void __init test_monitor_call(void)
 		return;
 	asm volatile(
 		"	mc	0,0\n"
-		"0:	xgr	%0,%0\n"
+		"0:	lhi	%[val],0\n"
 		"1:\n"
-		EX_TABLE(0b,1b)
-		: "+d" (val));
+		EX_TABLE(0b, 1b)
+		: [val] "+d" (val));
 	if (!val)
 		panic("Monitor call doesn't work!\n");
 }