diff --git a/templates/_helpers.tpl b/templates/_helpers.tpl
index 4c74291..d7b5959 100644
--- a/templates/_helpers.tpl
+++ b/templates/_helpers.tpl
@@ -392,3 +392,11 @@ https
 {{- define "gitea.serviceAccountName" -}}
 {{ .Values.serviceAccount.name | default (include "gitea.fullname" .) }}
 {{- end -}}
+
+{{- define "gitea.admin.passwordMode" -}}
+{{- if has .Values.gitea.admin.passwordMode (tuple "keepUpdated" "initialOnlyNoReset" "initialOnlyRequireReset") -}}
+{{ .Values.gitea.admin.passwordMode }}
+{{- else -}}
+{{ printf "gitea.admin.passwordMode must be set to one of 'keepUpdated', 'initialOnlyNoReset', or 'initialOnlyRequireReset'. Received: '%s'" .Values.gitea.admin.passwordMode | fail }}
+{{- end -}}
+{{- end -}}
diff --git a/templates/gitea/deployment.yaml b/templates/gitea/deployment.yaml
index 5618f2b..f321f22 100644
--- a/templates/gitea/deployment.yaml
+++ b/templates/gitea/deployment.yaml
@@ -244,7 +244,7 @@ spec:
               value: {{ .Values.gitea.admin.password | quote }}
             {{- end }}
             - name: GITEA_ADMIN_PASSWORD_MODE
-              value: {{ .Values.gitea.admin.passwordMode }}
+              value: {{ include "gitea.admin.passwordMode" $ }}
             {{- if .Values.deployment.env }}
             {{- toYaml .Values.deployment.env | nindent 12 }}
             {{- end }}
diff --git a/values.schema.json b/values.schema.json
deleted file mode 100644
index 90ac9d7..0000000
--- a/values.schema.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-  "$schema": "http://json-schema.org/draft-07/schema",
-  "properties": {
-    "gitea": {
-      "type": "object",
-      "properties": {
-        "admin": {
-          "type": "object",
-          "required": [
-            "passwordMode"
-          ],
-          "properties": {
-            "passwordMode": {
-              "type": "string",
-              "enum": [
-                "initialOnlyNoReset",
-                "initialOnlyRequireReset",
-                "keepUpdated"
-              ]
-            }
-          }
-        }
-      }
-    }
-  }
-}
\ No newline at end of file