diff --git a/ArduSub/GCS_Sub.h b/ArduSub/GCS_Sub.h
index b0b6c373f5..b99f2d4ec1 100644
--- a/ArduSub/GCS_Sub.h
+++ b/ArduSub/GCS_Sub.h
@@ -37,7 +37,7 @@ protected:
 
     GCS_MAVLINK_Sub *new_gcs_mavlink_backend(GCS_MAVLINK_Parameters &params,
                                              AP_HAL::UARTDriver &uart) override {
-        return new GCS_MAVLINK_Sub(params, uart);
+        return NEW_NOTHROW GCS_MAVLINK_Sub(params, uart);
     }
 
 };