diff --git a/lib/os.js b/lib/os.js
index 860348a472f325..bff7b275810a4a 100644
--- a/lib/os.js
+++ b/lib/os.js
@@ -354,6 +354,11 @@ function userInfo(options) {
   if (user === undefined)
     throw new ERR_SYSTEM_ERROR(ctx);
 
+  if (isWindows) {
+    user.uid |= 0;
+    user.gid |= 0;
+  }
+
   return user;
 }