diff --git a/modules/components/dropdown/tag-input-dropdown.component.ts b/modules/components/dropdown/tag-input-dropdown.component.ts
index 6f4fc51f..c267b30e 100644
--- a/modules/components/dropdown/tag-input-dropdown.component.ts
+++ b/modules/components/dropdown/tag-input-dropdown.component.ts
@@ -13,7 +13,7 @@ import {
 
 // rx
 import { Observable } from 'rxjs';
-import { filter, first, debounceTime } from 'rxjs/operators';
+import { filter, first, debounceTime, distinctUntilChanged } from 'rxjs/operators';
 
 import { Ng2Dropdown, Ng2MenuItem } from 'ng2-material-dropdown';
 import { defaults } from '../../defaults';
@@ -172,6 +172,7 @@ export class TagInputDropdown implements AfterViewInit {
     this.tagInput.onTextChange
       .asObservable()
       .pipe(
+        distinctUntilChanged(),
         debounceTime(DEBOUNCE_TIME),
         filter((value: string) => {
           if (KEEP_OPEN === false) {