diff --git a/gcc/testsuite/gcc.target/s390/s390.exp b/gcc/testsuite/gcc.target/s390/s390.exp
index ba493de9f95..57b2690f8ab 100644
--- a/gcc/testsuite/gcc.target/s390/s390.exp
+++ b/gcc/testsuite/gcc.target/s390/s390.exp
@@ -197,7 +197,7 @@ proc check_effective_target_s390_z14_hw { } {
 	int main (void)
 	{
 	    int x = 0;
-	    asm ("msgrkc %%0,%%0,%%0" : "+r" (x) : );
+	    asm ("msgrkc %0,%0,%0" : "+r" (x) : );
 	    return x;
 	}
     }] "-march=z14 -m64 -mzarch" ] } { return 0 } else { return 1 }