diff --git a/services/communication/mas-syn2mas-check-job.yaml b/services/communication/mas-syn2mas-check-job.yaml
index 829a979..b5b71d5 100644
--- a/services/communication/mas-syn2mas-check-job.yaml
+++ b/services/communication/mas-syn2mas-check-job.yaml
@@ -77,7 +77,7 @@ spec:
             - --synapse-config
             - /synapse-config/homeserver.yaml
             - --synapse-database-uri
-            - postgresql:
+            - "postgresql:"
           env:
             - name: PGHOST
               value: postgres-service.postgres.svc.cluster.local