diff --git a/ArduPlane/quadplane.cpp b/ArduPlane/quadplane.cpp
index d26c7de964..4670e15c6d 100644
--- a/ArduPlane/quadplane.cpp
+++ b/ArduPlane/quadplane.cpp
@@ -599,6 +599,7 @@ static const struct AP_Param::defaults_table_struct defaults_table_tailsitter[]
     { "MIXING_GAIN",      1.0 },
     { "RUDD_DT_GAIN",      10 },
     { "Q_TRANSITION_MS",   2000 },
+    { "Q_TRANS_DECEL",    6 },
 };
 
 /*