diff --git a/templates/_helpers.tpl b/templates/_helpers.tpl
index eefe859a6..ed9863cc1 100644
--- a/templates/_helpers.tpl
+++ b/templates/_helpers.tpl
@@ -112,8 +112,8 @@ app: "{{ template "harbor.name" . }}"
 {{- define "harbor.database.rawPassword" -}}
   {{- if eq .Values.database.type "internal" -}}
     {{- $existingSecret := lookup "v1" "Secret" .Release.Namespace (include "harbor.database" .) -}}
-    {{- if and (not (empty $existingSecret)) (hasKey $existingSecret.data "POSTGRES_PASSWORD") -}}
-      {{- .Values.database.internal.password | default (index $existingSecret.data "POSTGRES_PASSWORD" | b64dec) -}}
+    {{- if and (not (empty $existingSecret)) (hasKey ($existingSecret.data | default dict) "POSTGRES_PASSWORD") -}}
+      {{- .Values.database.internal.password | default (index ($existingSecret.data | default dict) "POSTGRES_PASSWORD" | b64dec) -}}
     {{- else -}}
       {{- .Values.database.internal.password -}}
     {{- end -}}