diff --git a/user_mgr.cpp b/user_mgr.cpp
index f407133..cba9366 100644
--- a/user_mgr.cpp
+++ b/user_mgr.cpp
@@ -456,8 +456,10 @@
             // Any error, break the loop.
             break;
         }
-        // All users whose UID >= 1000 and < 65534
-        if ((pwp->pw_uid >= 1000) && (pwp->pw_uid < 65534))
+        // Add all users whose UID >= 1000 and < 65534
+        // and special UID 0.
+        if ((pwp->pw_uid == 0) ||
+            ((pwp->pw_uid >= 1000) && (pwp->pw_uid < 65534)))
         {
             std::string userName(pwp->pw_name);
             userList.emplace_back(userName);