diff --git a/liboil/liboilcpu-misc.c b/liboil/liboilcpu-misc.c
index 97b740c..9333b13 100644
--- a/liboil/liboilcpu-misc.c
+++ b/liboil/liboilcpu-misc.c
@@ -87,7 +87,7 @@ static unsigned long
 oil_profile_stamp_s390(void)
 {
   uint64_t ts;
-  __asm__ __volatile__ ("STCK %0(%0)\n" : : "r" (&ts));
+  __asm__ __volatile__ ("STCK %0\n" : "=Q" (ts) :: "cc");
   return ts;
 }