diff --git a/lib/components/tag-input/tag-input.component.ts b/lib/components/tag-input/tag-input.component.ts
index d1f23e7..e109eec 100644
--- a/lib/components/tag-input/tag-input.component.ts
+++ b/lib/components/tag-input/tag-input.component.ts
@@ -325,6 +325,8 @@ export class TagInputComponent implements ControlValueAccessor, OnDestroy, OnIni
   }
 
   ngOnDestroy() {
-    this.tagInputSubscription.unsubscribe();
+    if (this.tagInputSubscription) {
+      this.tagInputSubscription.unsubscribe();
+    }
   }
 }