diff --git a/hedgedoc/manifests/app.yaml b/hedgedoc/manifests/app.yaml
index 77e8f6d9b251b5936ec076d882ec662cdf64419f..85d9b7200811ff6f36e8a2ca4c816f35e5faca2b 100644
--- a/hedgedoc/manifests/app.yaml
+++ b/hedgedoc/manifests/app.yaml
@@ -29,7 +29,7 @@ spec:
         - name: CMD_DB_URL
           valueFrom:
             secretKeyRef:
-              key: postgres-url
+              key: postgresql-url
               name: ${FQDN}
         - name: CMD_SESSION_SECRET
           valueFrom: