diff --git a/IPython/zmq/zmqshell.py b/IPython/zmq/zmqshell.py
index 840a628..218ebe8 100644
--- a/IPython/zmq/zmqshell.py
+++ b/IPython/zmq/zmqshell.py
@@ -396,7 +396,7 @@ class ZMQInteractiveShell(InteractiveShell):
 
     def magic_gui(self, *args, **kwargs):
         raise NotImplementedError(
-            'GUI support must be enabled in command line options.')
+            'Kernel GUI support is not implemented yet, except for --pylab.')
 
     def magic_pylab(self, *args, **kwargs):
         raise NotImplementedError(