diff --git a/src/modules/systemlib/rc_check.c b/src/modules/systemlib/rc_check.c
index 21e15ec563..975944eb75 100644
--- a/src/modules/systemlib/rc_check.c
+++ b/src/modules/systemlib/rc_check.c
@@ -140,7 +140,7 @@ int rc_calibration_check(int mavlink_fd) {
 		/* sanity checks pass, enable channel */
 		if (count) {
 			mavlink_log_critical(mavlink_fd, "ERROR: %d config error(s) for RC channel %d.", count, (i + 1));
-			warnx(mavlink_fd, "ERROR: %d config error(s) for RC channel %d.", count, (i + 1));
+			warnc(mavlink_fd, "ERROR: %d config error(s) for RC channel %d.", count, (i + 1));
 			usleep(100000);
 		}