diff --git a/frontend/src/global/form-rules.ts b/frontend/src/global/form-rules.ts
index d05f36702..230d31389 100644
--- a/frontend/src/global/form-rules.ts
+++ b/frontend/src/global/form-rules.ts
@@ -211,7 +211,7 @@ const checkImageName = (rule: any, value: any, callback: any) => {
     if (value === '' || typeof value === 'undefined' || value == null) {
         callback(new Error(i18n.global.t('commons.rule.imageName')));
     } else {
-        const reg = /^[a-zA-Z0-9]{1}[a-z:A-Z0-9_/.-]{0,150}$/;
+        const reg = /^[a-zA-Z0-9]{1}[a-z:A-Z0-9_/.-]{0,149}$/;
         if (!reg.test(value) && value !== '') {
             callback(new Error(i18n.global.t('commons.rule.imageName')));
         } else {