diff --git a/templates/_helpers.tpl b/templates/_helpers.tpl
index 08ab1be..003d39f 100644
--- a/templates/_helpers.tpl
+++ b/templates/_helpers.tpl
@@ -319,7 +319,7 @@ https
   {{- end -}}
   {{- if not (.Values.gitea.config.server.DOMAIN) -}}
     {{- if gt (len .Values.ingress.hosts) 0 -}}
-      {{- $_ := set .Values.gitea.config.server "DOMAIN" (index .Values.ingress.hosts 0).host -}}
+      {{- $_ := set .Values.gitea.config.server "DOMAIN" ( tpl (index .Values.ingress.hosts 0).host $) -}}
     {{- else -}}
       {{- $_ := set .Values.gitea.config.server "DOMAIN" (include "gitea.default_domain" .) -}}
     {{- end -}}
diff --git a/unittests/deployment/inline-config.yaml b/unittests/deployment/inline-config.yaml
new file mode 100644
index 0000000..545bb36
--- /dev/null
+++ b/unittests/deployment/inline-config.yaml
@@ -0,0 +1,33 @@
+suite: config template
+release:
+  name: gitea-unittests
+  namespace: testing
+templates:
+  - templates/gitea/config.yaml
+tests:
+  - it: inline config stringData.server using TPL
+    set:
+      global.giteaHostName: "gitea.example.com"
+      ingress.enabled: true
+      ingress.hosts[0].host: "{{ .Values.global.giteaHostName }}"
+      ingress.tls:
+        - secretName: gitea-tls
+          hosts:
+            - "{{ .Values.global.giteaHostName }}"
+    asserts:
+      - documentIndex: 0
+        matchRegex:
+          path: metadata.name
+          pattern: .*-inline-config$
+      - documentIndex: 0
+        matchRegex:
+          path: stringData.server
+          pattern: DOMAIN=gitea\.example\.com
+      - documentIndex: 0
+        matchRegex:
+          path: stringData.server
+          pattern: ROOT_URL=https://gitea\.example\.com
+      - documentIndex: 0
+        matchRegex:
+          path: stringData.server
+          pattern: SSH_DOMAIN=gitea\.example\.com