diff --git a/trikoder/oauth2-bundle/2.0/config/packages/trikoder_oauth2.yaml b/trikoder/oauth2-bundle/2.0/config/packages/trikoder_oauth2.yaml
index e2b79da7..f9f50510 100644
--- a/trikoder/oauth2-bundle/2.0/config/packages/trikoder_oauth2.yaml
+++ b/trikoder/oauth2-bundle/2.0/config/packages/trikoder_oauth2.yaml
@@ -10,4 +10,5 @@ trikoder_oauth2:
         public_key: /var/oauth/public.key                       # Change this
 
     persistence:
-        doctrine: null
+        doctrine:
+            entity_manager: default