diff --git a/src/xpra/client/gl/gl_client_window.py b/src/xpra/client/gl/gl_client_window.py
index 2bb80ef57c..facf7545fc 100644
--- a/src/xpra/client/gl/gl_client_window.py
+++ b/src/xpra/client/gl/gl_client_window.py
@@ -18,8 +18,6 @@ class GLClientWindow(ClientWindow):
     def __init__(self, client, group_leader, wid, x, y, w, h, metadata, override_redirect, client_properties, auto_refresh_delay):
         debug("GLClientWindow(..)")
         ClientWindow.__init__(self, client, group_leader, wid, x, y, w, h, metadata, override_redirect, client_properties, auto_refresh_delay)
-        #tell the server that we don't want RGB data by specifying only YUV modes:
-        self._client_properties["encoding.csc_modes"] = ("YUV420P", "YUV422P", "YUV444P")
         self.set_reallocate_redraws(True)
         self.add(self._backing.glarea)