diff --git a/manage.cpp b/manage.cpp
index 10f28e194f..e86902d203 100644
--- a/manage.cpp
+++ b/manage.cpp
@@ -99,8 +99,11 @@ bool Client::manage( Window w, bool isMapped )
     bool mresize, mmove, mminimize, mmaximize, mclose;
     if( Motif::funcFlags( client, mresize, mmove, mminimize, mmaximize, mclose )) 
         {
-        motif_may_resize = mresize; // this should be set using minsize==maxsize, but oh well
-        motif_may_move = mmove;
+        if( !hasNETSupport()) // NETWM apps should set type and size constraints
+            {
+            motif_may_resize = mresize; // this should be set using minsize==maxsize, but oh well
+            motif_may_move = mmove;
+            }
         // mminimize; - ignore, bogus - e.g. shading or sending to another desktop is "minimizing" too
         // mmaximize; - ignore, bogus - maximizing is basically just resizing
         motif_may_close = mclose; // motif apps like to crash when they set this hint and WM closes them anyway