diff --git a/manifests/common/app.yaml b/manifests/common/app.yaml
index daace3e..0274c06 100644
--- a/manifests/common/app.yaml
+++ b/manifests/common/app.yaml
@@ -75,7 +75,7 @@ spec:
               containerPort: 8080
           env:
             - name: ELEMENT_WEB_PORT
-              value: 8080
+              value: "8080"
           volumeMounts:
             - name: config
               mountPath: /app/config.json