diff --git a/packages/workbox-webpack-plugin/src/inject-manifest.ts b/packages/workbox-webpack-plugin/src/inject-manifest.ts
index 9c8fa68b58..f91b45316a 100644
--- a/packages/workbox-webpack-plugin/src/inject-manifest.ts
+++ b/packages/workbox-webpack-plugin/src/inject-manifest.ts
@@ -14,7 +14,6 @@ import stringify from 'fast-json-stable-stringify';
 import upath from 'upath';
 import webpack from 'webpack';
 
-//import {CommonConfig} from './types';
 import {getManifestEntriesFromCompilation} from './lib/get-manifest-entries-from-compilation';
 import {getSourcemapAssetName} from './lib/get-sourcemap-asset-name';
 import {relativeToOutputPath} from './lib/relative-to-output-path';