diff --git a/server/books/tests/test_module_mutations.py b/server/books/tests/test_module_mutations.py
index 5eb3db58..ac825fec 100644
--- a/server/books/tests/test_module_mutations.py
+++ b/server/books/tests/test_module_mutations.py
@@ -123,27 +123,28 @@ class NewContentBlockMutationTest(TestCase):
         self.assertEqual(content.get('type'), 'image_url_block')
         self.assertEqual(content.get('value'), {'url': '/test.png'})
 
-
-    @skip("TODO: Fix this test")
     def test_updateLastModuleLevel(self):
         self.assertIsNone(self.user.last_module_level, None)
 
-        moduleLevel= ModuleLevelFactory(name='1. Lehrjahr')
+        moduleLevel = ModuleLevelFactory(name='1. Lehrjahr')
         moduleLevel1 = ModuleLevelFactory(name='2. Lehrjahr')
 
         mutation = """
-            mutation ($input: UpdateLastModuleLevelInput!){updateLastModuleLevel(input: $input) {
-                      clientMutationId
-                      user {
-                        username
-                        lastModuleLevel {
-                          name
-                          id
-                        }
-                      }
-                    }}
+            mutation ($input: UpdateLastModuleLevelInput!) {
+              updateLastModuleLevel(input: $input) {
+                clientMutationId
+                user {
+                  username
+                  lastModuleLevel {
+                    name
+                    id
+                  }
+                }
+              }
+            }
         """
-        result = self.client.execute(mutation, variables={"input": {"id": moduleLevel1.id}})
+        module_level_gql_id = to_global_id('ModuleLevelNode', moduleLevel1.pk)
+        result = self.client.execute(mutation, variables={"input": {"id": module_level_gql_id}})
         self.assertIsNone(result.get('errors'))
 
         updated_user = User.objects.get(id=self.user.id)