diff --git a/lib/common/utils.js b/lib/common/utils.js
index 76768071ec..54a13cbaa1 100644
--- a/lib/common/utils.js
+++ b/lib/common/utils.js
@@ -97,7 +97,7 @@ export function wp (p) {
 export function wChunk (p) {
   /* istanbul ignore if */
   if (isWindows) {
-    return p.replace(/\//g, '\\')
+    return p.replace(/\//g, '\\\\')
   }
   return p
 }