diff --git a/backend/SystemUpdater/backend/__init__.py b/backend/SystemUpdater/backend/__init__.py
index c7c7cbb..58d15e0 100644
--- a/backend/SystemUpdater/backend/__init__.py
+++ b/backend/SystemUpdater/backend/__init__.py
@@ -106,8 +106,10 @@ class UpdateEssentialItem():
     
     def check_white(self,remove_pkgs):
         logging.info("Check: remove pkg in White Packages...")
-        for pkg in remove_pkgs:
-            if pkg in self.remove_white:
+        new_upgrade_list = list(set(remove_pkgs) & set(self.remove_white))
+
+        for pkg in new_upgrade_list:
+            if pkg in remove_pkgs:
                 logging.info("%s will be remove in remove pkg...",pkg)
                 remove_pkgs.remove(pkg)