diff --git a/src/common-components/button-question/button-question.vue b/src/common-components/button-question/button-question.vue
index 7556f11d1..adcb9b4ac 100644
--- a/src/common-components/button-question/button-question.vue
+++ b/src/common-components/button-question/button-question.vue
@@ -168,6 +168,7 @@ export default {
         this.selectedValues = val.value;
       } else {
         if(Array.isArray(this.selectedValues)) {
+          const newSelectedValues = this.selectedValues;
           val.checkValue ? newSelectedValues.push(val.value) : newSelectedValues.splice(newSelectedValues.indexOf(val.value), 1);
           this.selectedValues = newSelectedValues;
         }
@@ -175,7 +176,6 @@ export default {
           this.selectedValues = val.value;
         }
       }
-
       this.$emit("isCheckedChanged", val);
     },
   },