diff --git a/cps/ub.py b/cps/ub.py
index b295c6e3..1969ef53 100644
--- a/cps/ub.py
+++ b/cps/ub.py
@@ -673,11 +673,12 @@ def init_db(app_db_path):
     Session.configure(bind=engine)
     session = Session()
 
-    Base.metadata.create_all(engine)
     if os.path.exists(app_db_path):
+        Base.metadata.create_all(engine)
         migrate_Database(session)
         clean_database(session)
     else:
+        Base.metadata.create_all(engine)
         create_admin_user(session)
         create_anonymous_user(session)