diff --git a/libraries/SITL/SIM_QuadPlane.h b/libraries/SITL/SIM_QuadPlane.h
index 0b14c49bfc..0c5b793303 100644
--- a/libraries/SITL/SIM_QuadPlane.h
+++ b/libraries/SITL/SIM_QuadPlane.h
@@ -41,7 +41,6 @@ public:
     }
 private:
     Frame *frame;
-    bool elevons;
 };
 
 } // namespace SITL