diff --git a/Step/wwwroot/src/modules/base-components/cards/input-box.vue b/Step/wwwroot/src/modules/base-components/cards/input-box.vue
index b2ec3d93..b97fd0a3 100644
--- a/Step/wwwroot/src/modules/base-components/cards/input-box.vue
+++ b/Step/wwwroot/src/modules/base-components/cards/input-box.vue
@@ -9,7 +9,7 @@
                 <slot></slot>
               </select>
               <input v-if="type=='int' || type=='double'" v-model.number="bindingValue" type="number"
-                    :min="minValue" :max="maxValue"
+                    :min="minValue" :max="maxValue" v-validate="'min_value:0'"
                      :readonly="readOnly">
               <div class="togglebutton" v-if="type=='boolean'">
                 <label>