diff --git a/types/webpack-dev-server/index.d.ts b/types/webpack-dev-server/index.d.ts
index 31d5b42891..c6bab12c3b 100644
--- a/types/webpack-dev-server/index.d.ts
+++ b/types/webpack-dev-server/index.d.ts
@@ -81,7 +81,7 @@ declare class WebpackDevServer {
     );
 
     static addDevServerEntrypoints(
-        webpack: webpack.Compiler | webpack.MultiCompiler,
+        webpackOptions: webpack.Configuration | webpack.Configuration[],
         config: WebpackDevServer.Configuration,
         listeningApp?: WebpackDevServer.ListeningApp
     ): void;
diff --git a/types/webpack-dev-server/webpack-dev-server-tests.ts b/types/webpack-dev-server/webpack-dev-server-tests.ts
index eee626ecec..5a23a60ad7 100644
--- a/types/webpack-dev-server/webpack-dev-server-tests.ts
+++ b/types/webpack-dev-server/webpack-dev-server-tests.ts
@@ -87,13 +87,13 @@ server.listen(8080, "localhost", () => { });
 
 server.close();
 
-WebpackDevServer.addDevServerEntrypoints(compiler, {
+WebpackDevServer.addDevServerEntrypoints(config, {
     publicPath: "/assets/",
     https: true
 });
 
 WebpackDevServer.addDevServerEntrypoints(
-    compiler,
+    [config],
     {
         publicPath: "/assets/",
         https: true