diff --git a/cluster/platform/harbor/externalsecret.yaml b/cluster/platform/harbor/externalsecret.yaml
index fb1b29e..d450a6f 100644
--- a/cluster/platform/harbor/externalsecret.yaml
+++ b/cluster/platform/harbor/externalsecret.yaml
@@ -36,7 +36,8 @@ spec:
         key: the-seas
         property: redis-password
     
-    - secretKey: CORE_SECRET
+    # Core secret - Harbor Helm chart expects key named 'secret' not 'CORE_SECRET'
+    - secretKey: secret
       remoteRef:
         key: the-seas
         property: core-secret