diff --git a/frontend/src/business/components/api/definition/components/mock/Components/MockApiResponseBody.vue b/frontend/src/business/components/api/definition/components/mock/Components/MockApiResponseBody.vue
index b4d88da95f..2870f54a39 100644
--- a/frontend/src/business/components/api/definition/components/mock/Components/MockApiResponseBody.vue
+++ b/frontend/src/business/components/api/definition/components/mock/Components/MockApiResponseBody.vue
@@ -349,9 +349,8 @@ export default {
     if (!this.body.scriptObject) {
       this.body.scriptObject = {};
     }
-
     if (!this.body.xmlHeader) {
-      this.body.xmlHeader = 'version="1.0" encoding="UTF-8"';
+      this.body.xmlHeader = '';
     }
   }
 }