diff --git a/cylc/flow/scripts/cylc.py b/cylc/flow/scripts/cylc.py
index 8d8b2007e02..ba4dfe7dddd 100644
--- a/cylc/flow/scripts/cylc.py
+++ b/cylc/flow/scripts/cylc.py
@@ -137,8 +137,6 @@ def get_version(long=False):
         ' use cylc graph <flow1> --diff <flow2>',
     'gscan':
         'cylc gscan has been removed, use the web UI',
-    'gui':
-        'cylc gui has been removed, use the web UI',
     'insert':
         'inserting tasks is now done automatically',
     'jobscript':