diff --git a/src/Environment/environment_mgr.cxx b/src/Environment/environment_mgr.cxx
index fd0f7b77d..4542472d8 100644
--- a/src/Environment/environment_mgr.cxx
+++ b/src/Environment/environment_mgr.cxx
@@ -191,9 +191,7 @@ FGEnvironmentMgr::bind ()
   fgTie("/sim/rendering/clouds3d-vis-range", thesky,
         &SGSky::get_3dCloudVisRange,
         &SGSky::set_3dCloudVisRange);
-  fgTie("/sim/rendering/clouds3d-num-flavours", thesky,
-        &SGSky::get_3dCloudNumFlavours,
-        &SGSky::set_3dCloudNumFlavours);
+  
   fgTie("/sim/rendering/precipitation-enable", &sgEnviro,
 	  &SGEnviro::get_precipitation_enable_state, 
 	  &SGEnviro::set_precipitation_enable_state);
@@ -244,7 +242,6 @@ FGEnvironmentMgr::unbind ()
   fgUntie("/sim/rendering/clouds3d-enable");
   fgUntie("/sim/rendering/clouds3d-vis-range");
   fgUntie("/sim/rendering/clouds3d-density");
-  fgUntie("/sim/rendering/clouds3d-num-flavours");
   fgUntie("/sim/rendering/precipitation-enable");
   fgUntie("/environment/rebuild-layers");
   fgUntie("/sim/rendering/lightning-enable");