diff --git a/lib/os.js b/lib/os.js
index f0f0fdb15f61c01..7fa8ee5c650643d 100644
--- a/lib/os.js
+++ b/lib/os.js
@@ -346,6 +346,11 @@ function userInfo(options) {
   if (user === undefined)
     throw new ERR_SYSTEM_ERROR(ctx);
 
+  if (isWindows) {
+    user.uid |= 0;
+    user.gid |= 0;
+  }
+
   return user;
 }