diff --git a/manifest.yaml b/manifest.yaml
index 091fe35..bfad35d 100644
--- a/manifest.yaml
+++ b/manifest.yaml
@@ -119,7 +119,7 @@ spec:
       middlewares:
         - name: redirect-no-www-to-www
   tls:
-    secretName: $CRT_TLS_NAME
+    secretName: ${CRT_TLS_NAME}
 
 ---
 apiVersion: batch/v1