diff --git a/src/carousel.ts b/src/carousel.ts
index 2cc27b09..48a1a9d5 100644
--- a/src/carousel.ts
+++ b/src/carousel.ts
@@ -49,7 +49,7 @@ export class Carousel implements ICarousel {
 	 * @internal
 	 */
 	public static resetInstanceCount(): void {
-		/* This should not be part of the coverage report: */
+		/* This should not be part of the coverage report: test util */
 		/* istanbul ignore next */
 		if (process.env.NODE_ENV === 'test') {
 			__instanceCount = 0;
diff --git a/src/utils/cache.ts b/src/utils/cache.ts
index 96fa16a4..5a7935af 100644
--- a/src/utils/cache.ts
+++ b/src/utils/cache.ts
@@ -74,4 +74,6 @@ export function clearFullCache(ref: Reference): void {
 /**
  * This exposes the cache instance for test environments. Otherwise it will be null.
  */
+/* This should not be part of the coverage report: test util */
+/* istanbul ignore next */
 export const cacheInstance = (process.env.NODE_ENV === 'test') ? __CACHE : null;