diff --git a/libraries/GCS_MAVLink/GCS_Common.cpp b/libraries/GCS_MAVLink/GCS_Common.cpp
index b61a680b55..ffce7bdfab 100644
--- a/libraries/GCS_MAVLink/GCS_Common.cpp
+++ b/libraries/GCS_MAVLink/GCS_Common.cpp
@@ -1002,8 +1002,8 @@ void GCS_MAVLINK::send_radio_in()
     uint32_t now = AP_HAL::millis();
     mavlink_status_t *status = mavlink_get_channel_status(chan);
 
-    uint16_t values[18];
-    RC_Channels::get_radio_in(values, 18);
+    uint16_t values[18] = {};
+    rc().get_radio_in(values, 18);
 
     if (status && (status->flags & MAVLINK_STATUS_FLAG_OUT_MAVLINK1)) {
         // for mavlink1 send RC_CHANNELS_RAW, for compatibility with OSD implementations