diff --git a/bin/geomag.py b/bin/geomag.py
index 4b4f5198efea0a4c0ffa8141ed83896410ee2f22..d31936aeb316ae15bbd7ecbf92c9eb902f75083d 100755
--- a/bin/geomag.py
+++ b/bin/geomag.py
@@ -193,9 +193,9 @@ def parse_args():
             default='variation',
             choices=['variation', 'quasi-definitive', 'definitive'])
     parser.add_argument('--locationcode',
-            choices=['R0', 'R1', 'RM', 'Q0', 'D0', 'C0', 'Z1'])
+            choices=['R0', 'R1', 'RM', 'Q0', 'D0', 'C0'])
     parser.add_argument('--outlocationcode',
-            choices=['R0', 'R1', 'RM', 'Q0', 'D0', 'C0', 'Z1'])
+            choices=['R0', 'R1', 'RM', 'Q0', 'D0', 'C0'])
     parser.add_argument('--interval',
             default='minute',
             choices=['minute', 'second'])