diff --git a/src/FDM/UFO.cxx b/src/FDM/UFO.cxx
index f173d32c8..c08d3ca34 100644
--- a/src/FDM/UFO.cxx
+++ b/src/FDM/UFO.cxx
@@ -74,8 +74,8 @@ void FGUFO::update( double dt ) {
 
     // read the throttle
     double th = globals->get_controls()->get_throttle( 0 );
-    if ( globals->get_controls()->get_brake_left() > 0.0 
-         || globals->get_controls()->get_brake_right() > 0.0 )
+    if ( globals->get_controls()->get_brake_left() > 0.5
+         || globals->get_controls()->get_brake_right() > 0.5 )
     {
         th = -th;
     }