diff --git a/tools/test-backend b/tools/test-backend
index dc3b366b36..2e84ebd9a1 100755
--- a/tools/test-backend
+++ b/tools/test-backend
@@ -54,7 +54,6 @@ not_yet_fully_covered = {
     'zerver/lib/bugdown/__init__.py',
     'zerver/lib/cache.py',
     'zerver/lib/cache_helpers.py',
-    'zerver/lib/create_user.py',
     'zerver/lib/exceptions.py',
     'zerver/lib/i18n.py',
     'zerver/lib/notifications.py',
diff --git a/zerver/lib/create_user.py b/zerver/lib/create_user.py
index 2d95f0da92..3f5cca8781 100644
--- a/zerver/lib/create_user.py
+++ b/zerver/lib/create_user.py
@@ -60,8 +60,7 @@ def create_user(email: str, password: Optional[str], realm: Realm,
                 is_mirror_dummy: bool = False,
                 default_sending_stream: Optional[Stream] = None,
                 default_events_register_stream: Optional[Stream] = None,
-                default_all_public_streams: Optional[bool] = None,
-                user_profile_id: Optional[int] = None) -> UserProfile:
+                default_all_public_streams: Optional[bool] = None) -> UserProfile:
     user_profile = create_user_profile(realm, email, password, active, bot_type,
                                        full_name, short_name, bot_owner,
                                        is_mirror_dummy, tos_version, timezone)
@@ -74,9 +73,6 @@ def create_user(email: str, password: Optional[str], realm: Realm,
     if default_all_public_streams is not None:
         user_profile.default_all_public_streams = default_all_public_streams
 
-    if user_profile_id is not None:
-        user_profile.id = user_profile_id
-
     user_profile.save()
     recipient = Recipient.objects.create(type_id=user_profile.id,
                                          type=Recipient.PERSONAL)