diff --git a/projectroles/app_settings.py b/projectroles/app_settings.py
index 023718e5..103c8f32 100644
--- a/projectroles/app_settings.py
+++ b/projectroles/app_settings.py
@@ -201,7 +201,7 @@ def _validate_value_in_options(
         Ensure setting_value is present in setting_options.
 
         :param setting_value: String
-        :param setting_options: List of options (String or Integers)
+        :param setting_options: List of options
         :param project: Project object
         :param user: User object
         :raise: ValueError if type is not recognized
@@ -218,15 +218,11 @@ def _validate_value_in_options(
                         ', '.join(map(str, valid_options)),
                     )
                 )
-        else:
+        elif setting_options:
             opts = [
                 o[0] if isinstance(o, tuple) else o for o in setting_options
             ]
-            if (
-                setting_options
-                and not callable(setting_options)
-                and setting_value not in opts
-            ):
+            if setting_value not in opts:
                 raise ValueError(
                     'Choice "{}" not found in options ({})'.format(
                         setting_value, ', '.join(map(str, setting_options))