diff --git a/src/internal/operators/sample.ts b/src/internal/operators/sample.ts
index 1e8e0cfa983..aeae0e10a6b 100644
--- a/src/internal/operators/sample.ts
+++ b/src/internal/operators/sample.ts
@@ -1,4 +1,3 @@
-import { Observable } from '../Observable';
 import { innerFrom } from '../observable/innerFrom';
 import { MonoTypeOperatorFunction, ObservableInput } from '../types';
 import { operate } from '../util/lift';