diff --git a/frontend/src/business/components/api/test/components/assertion/ApiAssertionText.vue b/frontend/src/business/components/api/test/components/assertion/ApiAssertionText.vue
index 804b4b413c..160b22d870 100644
--- a/frontend/src/business/components/api/test/components/assertion/ApiAssertionText.vue
+++ b/frontend/src/business/components/api/test/components/assertion/ApiAssertionText.vue
@@ -20,7 +20,7 @@
         </el-select>
       </el-col>
       <el-col>
-        <el-input v-model="value" maxlength="255" size="small" show-word-limit
+        <el-input v-model="value" maxlength="200" size="small" show-word-limit
                   :placeholder="$t('api_test.request.assertions.value')"/>
       </el-col>
       <el-col class="assertion-btn">