diff --git a/src/components/autocomplete/AutoComplete.vue b/src/components/autocomplete/AutoComplete.vue
index 45803f8a9..973f2a3ab 100755
--- a/src/components/autocomplete/AutoComplete.vue
+++ b/src/components/autocomplete/AutoComplete.vue
@@ -828,7 +828,7 @@ export default {
 
             if (this.optionGroupLabel) {
                 options = options.reduce((result, option, index) => {
-                    result.push({ optionGroup: option, group: true, groupIndex: index });
+                    result.push({ optionGroup: option, group: true, index });
 
                     let optionGroupChildren = this.getOptionGroupChildren(option);
                     optionGroupChildren && optionGroupChildren.forEach(o => result.push(o));
diff --git a/src/components/dropdown/Dropdown.vue b/src/components/dropdown/Dropdown.vue
index 11b647d99..969d1b26c 100755
--- a/src/components/dropdown/Dropdown.vue
+++ b/src/components/dropdown/Dropdown.vue
@@ -813,7 +813,7 @@ export default {
 
             if (this.optionGroupLabel) {
                 options = options.reduce((result, option, index) => {
-                    result.push({ optionGroup: option, group: true, groupIndex: index });
+                    result.push({ optionGroup: option, group: true, index });
 
                     let optionGroupChildren = this.getOptionGroupChildren(option);
                     optionGroupChildren && optionGroupChildren.forEach(o => result.push(o));
diff --git a/src/components/listbox/Listbox.vue b/src/components/listbox/Listbox.vue
index fb491abd1..17bb38479 100755
--- a/src/components/listbox/Listbox.vue
+++ b/src/components/listbox/Listbox.vue
@@ -641,7 +641,7 @@ export default {
 
             if (this.optionGroupLabel) {
                 options = options.reduce((result, option, index) => {
-                    result.push({ optionGroup: option, group: true, groupIndex: index });
+                    result.push({ optionGroup: option, group: true, index });
 
                     let optionGroupChildren = this.getOptionGroupChildren(option);
                     optionGroupChildren && optionGroupChildren.forEach(o => result.push(o));
diff --git a/src/components/multiselect/MultiSelect.vue b/src/components/multiselect/MultiSelect.vue
index 6063c3ab1..946ca6a7c 100755
--- a/src/components/multiselect/MultiSelect.vue
+++ b/src/components/multiselect/MultiSelect.vue
@@ -943,7 +943,7 @@ export default {
 
             if (this.optionGroupLabel) {
                 options = options.reduce((result, option, index) => {
-                    result.push({ optionGroup: option, group: true, groupIndex: index });
+                    result.push({ optionGroup: option, group: true, index });
 
                     let optionGroupChildren = this.getOptionGroupChildren(option);
                     optionGroupChildren && optionGroupChildren.forEach(o => result.push(o));