diff --git a/ArduPlane/GCS_Plane.h b/ArduPlane/GCS_Plane.h
index 33d6becddb..6836ee1dba 100644
--- a/ArduPlane/GCS_Plane.h
+++ b/ArduPlane/GCS_Plane.h
@@ -12,14 +12,14 @@ public:
     // return GCS link at offset ofs
     GCS_MAVLINK_Plane *chan(const uint8_t ofs) override {
         if (ofs > _num_gcs) {
-            AP::internalerror().error(AP_InternalError::error_t::gcs_offset);
+            INTERNAL_ERROR(AP_InternalError::error_t::gcs_offset);
             return nullptr;
         }
         return (GCS_MAVLINK_Plane *)_chan[ofs];
     }
     const GCS_MAVLINK_Plane *chan(const uint8_t ofs) const override {
         if (ofs > _num_gcs) {
-            AP::internalerror().error(AP_InternalError::error_t::gcs_offset);
+            INTERNAL_ERROR(AP_InternalError::error_t::gcs_offset);
             return nullptr;
         }
         return (GCS_MAVLINK_Plane *)_chan[ofs];