diff --git a/Engine/prop_generic2f.xml b/Engine/prop_generic2f.xml
index ee6df7be2..2e4ec6a5d 100644
--- a/Engine/prop_generic2f.xml
+++ b/Engine/prop_generic2f.xml
@@ -3,8 +3,6 @@
   IXX       5
   DIAMETER  76
   NUMBLADES  2
-  SENSE 1
-  P_FACTOR 1
   EFFICIENCY 12 1
   0.0   0.00
   0.1   0.08
@@ -45,3 +43,4 @@
   1.0   0.010
   1.04  0.000
 </FG_PROPELLER>
+