diff --git a/‎gitlab/types.py‎
Lines changed: 4 additions & 0 deletions b/‎gitlab/types.py‎
Lines changed: 4 additions & 0 deletions
@@ -38,6 +38,10 @@ def set_from_cli(self, cli_value):
             self._value = [item.strip() for item in cli_value.split(",")]
 
     def get_for_api(self):
+        # Do not comma-split single value passed as string
+        if isinstance(self._value, str):
+            return self._value
+
         return ",".join(self._value)