diff --git a/src/extra/debounce.ts b/src/extra/debounce.ts
index 1938277..1514c90 100644
--- a/src/extra/debounce.ts
+++ b/src/extra/debounce.ts
@@ -93,8 +93,8 @@ class DebounceOperator<T> implements Operator<T, T> {
  * @param {number} period The amount of silence required in milliseconds.
  * @return {Stream}
  */
-export default function debounce<T>(period: number): (ins: Stream<T>) => Stream<T> {
-  return function debounceOperator(ins: Stream<T>) {
+export default function debounce(period: number): <T>(ins: Stream<T>) => Stream<T> {
+  return function debounceOperator<T>(ins: Stream<T>) {
     return new Stream<T>(new DebounceOperator(period, ins));
   };
 }
diff --git a/tests/extra/debounce.ts b/tests/extra/debounce.ts
index 093dcca..19d96bb 100644
--- a/tests/extra/debounce.ts
+++ b/tests/extra/debounce.ts
@@ -13,7 +13,7 @@ describe('debounce (extra)', () => {
         out.next(5);
       },
       stop() {}
-    }
+    };
     const stream = xs.create(producer).compose(debounce(100));
     const expected = [5];
     let listener = {