diff --git a/tools/testing/selftests/timers/rtctest.c b/tools/testing/selftests/timers/rtctest.c
index 97beadf548b0f5e50a5bfa663027157abecc8ebd..4230d3052e5d5948939926866d649ad636726051 100644
--- a/tools/testing/selftests/timers/rtctest.c
+++ b/tools/testing/selftests/timers/rtctest.c
@@ -218,7 +218,7 @@ int main(int argc, char **argv)
 		retval = ioctl(fd, RTC_IRQP_SET, tmp);
 		if (retval == -1) {
 			/* not all RTCs can change their periodic IRQ rate */
-			if (errno == ENOTTY) {
+			if (errno == EINVAL) {
 				fprintf(stderr,
 					"\n...Periodic IRQ rate is fixed\n");
 				goto done;