diff --git a/ArduPlane/mode_takeoff.cpp b/ArduPlane/mode_takeoff.cpp
index 37677541dc..e30dbf0164 100644
--- a/ArduPlane/mode_takeoff.cpp
+++ b/ArduPlane/mode_takeoff.cpp
@@ -44,7 +44,8 @@ const AP_Param::GroupInfo ModeTakeoff::var_info[] = {
     AP_GROUPEND
 };
 
-ModeTakeoff::ModeTakeoff()
+ModeTakeoff::ModeTakeoff() :
+    Mode()
 {
     AP_Param::setup_object_defaults(this, var_info);
 }