diff --git a/manifests/database/deployment.yaml b/manifests/database/deployment.yaml
index 67b8628..58fa8bd 100644
--- a/manifests/database/deployment.yaml
+++ b/manifests/database/deployment.yaml
@@ -29,9 +29,9 @@ spec:
           readinessProbe:
             exec:
               command:
-                - pg_isready
-                - -U
-                - $(POSTGRES_USER)
+                - sh
+                - -c
+                - pg_isready -U "$POSTGRES_USER" -d "$POSTGRES_DB"
             initialDelaySeconds: 5
             periodSeconds: 10
       volumes: