diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index a0cb098..832a3b6 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -1047,6 +1047,11 @@
     }
 
     private UserInfo createUserInternal(String name, int flags, int parentId) {
+        if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean(
+                UserManager.DISALLOW_ADD_USER, false)) {
+            Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled.");
+            return null;
+        }
         final long ident = Binder.clearCallingIdentity();
         UserInfo userInfo = null;
         try {