diff --git a/rhodecode/model/forms.py b/rhodecode/model/forms.py
--- a/rhodecode/model/forms.py
+++ b/rhodecode/model/forms.py
@@ -438,6 +438,7 @@ def ApplicationSettingsForm():
         filter_extra_fields = False
         rhodecode_title = UnicodeString(strip=True, min=1, not_empty=True)
         rhodecode_realm = UnicodeString(strip=True, min=1, not_empty=True)
+        ga_code = UnicodeString(strip=True, min=1, not_empty=False)
 
     return _ApplicationSettingsForm