diff --git a/lib/websocket.js b/lib/websocket.js
index 539238190..83b471d94 100644
--- a/lib/websocket.js
+++ b/lib/websocket.js
@@ -654,9 +654,8 @@ function initAsClient(websocket, address, protocols, options) {
 
         if (extensions[PerMessageDeflate.extensionName]) {
           perMessageDeflate.accept(extensions[PerMessageDeflate.extensionName]);
-          websocket._extensions[
-            PerMessageDeflate.extensionName
-          ] = perMessageDeflate;
+          websocket._extensions[PerMessageDeflate.extensionName] =
+            perMessageDeflate;
         }
       } catch (err) {
         abortHandshake(