diff --git a/generic_config_updater/change_applier.py b/generic_config_updater/change_applier.py
index 9261fa198d..9871e554b2 100644
--- a/generic_config_updater/change_applier.py
+++ b/generic_config_updater/change_applier.py
@@ -147,8 +147,8 @@ def apply(self, change):
         ret = self._services_validate(run_data, upd_data, upd_keys)
         if not ret:
             run_data = self._get_running_config()
-            upd_data = self.get_config_without_backend_tables(upd_data)
-            run_data = self.get_config_without_backend_tables(run_data)
+            self.remove_backend_tables_from_config(upd_data)
+            self.remove_backend_tables_from_config(run_data)
             if upd_data != run_data:
                 self._report_mismatch(run_data, upd_data)
                 ret = -1
@@ -157,11 +157,9 @@ def apply(self, change):
         return ret
 
 
-    def get_config_without_backend_tables(self, data):
-        cropped_data = {
-            k: v for k, v in data.items() if k not in self.backend_tables
-        }
-        return cropped_data
+    def remove_backend_tables_from_config(self, data):
+        for key in self.backend_tables:
+            data.pop(key, None)
 
 
     def _get_running_config(self):
diff --git a/generic_config_updater/generic_updater.py b/generic_config_updater/generic_updater.py
index 9cbe063f9e..56297039aa 100644
--- a/generic_config_updater/generic_updater.py
+++ b/generic_config_updater/generic_updater.py
@@ -77,8 +77,8 @@ def apply(self, patch):
         # Validate config updated successfully
         self.logger.log_notice("Verifying patch updates are reflected on ConfigDB.")
         new_config = self.config_wrapper.get_config_db_as_json()
-        target_config = self.changeapplier.get_config_without_backend_tables(target_config)
-        new_config = self.changeapplier.get_config_without_backend_tables(new_config)
+        self.changeapplier.remove_backend_tables_from_config(target_config)
+        self.changeapplier.remove_backend_tables_from_config(new_config)
         if not(self.patch_wrapper.verify_same_json(target_config, new_config)):
             raise GenericConfigUpdaterError(f"After applying patch to config, there are still some parts not updated")
 
diff --git a/tests/generic_config_updater/generic_updater_test.py b/tests/generic_config_updater/generic_updater_test.py
index 1b4383c04c..aab2eae275 100644
--- a/tests/generic_config_updater/generic_updater_test.py
+++ b/tests/generic_config_updater/generic_updater_test.py
@@ -73,8 +73,6 @@ def __create_patch_applier(self,
 
         changeapplier = Mock()
         changeapplier.apply.side_effect = create_side_effect_dict({(str(changes[0]),): 0, (str(changes[1]),): 0})
-        changeapplier.get_config_without_backend_tables.side_effect = \
-            [Files.CONFIG_DB_AFTER_MULTI_PATCH, Files.CONFIG_DB_AFTER_MULTI_PATCH]
 
         return gu.PatchApplier(patchsorter, changeapplier, config_wrapper, patch_wrapper)