diff --git a/kubernetes/apps/database/emqx/cluster/kustomization.yaml b/kubernetes/apps/database/emqx/cluster/kustomization.yaml
index a5acc704..f33d55f3 100644
--- a/kubernetes/apps/database/emqx/cluster/kustomization.yaml
+++ b/kubernetes/apps/database/emqx/cluster/kustomization.yaml
@@ -12,7 +12,7 @@ replacements:
   - source:
       kind: ConfigMap
       name: emqx-conf
-      fieldPath: data.emqx.conf
+      fieldPath: data.emqx\.conf
     targets:
       - select:
           kind: EMQX