diff --git a/clusters/lovenet/apps/home/exercisediary/app/helm-release.yaml b/clusters/lovenet/apps/home/exercisediary/app/helm-release.yaml
index b65519caf2..972772495a 100644
--- a/clusters/lovenet/apps/home/exercisediary/app/helm-release.yaml
+++ b/clusters/lovenet/apps/home/exercisediary/app/helm-release.yaml
@@ -48,7 +48,7 @@ spec:
               TZ: ${TIMEZONE}         # required, default: ""
               HOST: "0.0.0.0"         # optional, default: 0.0.0.0
               PORT: "8851"            # optional, default: 8851
-              THEME: "Darkly"         # optional, default: grass
+              THEME: "darkly"         # optional, default: grass
               COLOR: "dark"           # optional, default: light
 
             resources: