diff --git a/install/ui/src/freeipa/Application_controller.js b/install/ui/src/freeipa/Application_controller.js
index 46aabc9c4..140ee8fe0 100644
--- a/install/ui/src/freeipa/Application_controller.js
+++ b/install/ui/src/freeipa/Application_controller.js
@@ -318,6 +318,7 @@ define([
                         $type: 'text',
                         name: 'pagination_size',
                         label: '@i18n:customization.table_pagination',
+                        required: true,
                         validators: ['positive_integer']
                     }
                 ]
diff --git a/ipatests/test_webui/test_misc_cases.py b/ipatests/test_webui/test_misc_cases.py
index 5f7ffb54e..aca9e1a99 100644
--- a/ipatests/test_webui/test_misc_cases.py
+++ b/ipatests/test_webui/test_misc_cases.py
@@ -11,6 +11,11 @@ from ipatests.test_webui.ui_driver import screenshot
 import pytest
 import re
 
+try:
+    from selenium.webdriver.common.by import By
+except ImportError:
+    pass
+
 
 @pytest.mark.tier1
 class TestMiscCases(UI_driver):
@@ -26,3 +31,17 @@ class TestMiscCases(UI_driver):
         ver_re = re.compile('version: .*')
         assert re.search(ver_re, about_text), 'Version not found'
         self.dialog_button_click('ok')
+
+    @screenshot
+    def test_customization_pagination_input_required(self):
+        """Test if 'pagination size' is required when submitting the form."""
+        self.init_app()
+
+        self.profile_menu_action('configuration')
+        self.fill_input('pagination_size', '')
+        self.dialog_button_click('save')
+
+        pagination_size_elem = self.find(
+            ".widget[name='pagination_size']", By.CSS_SELECTOR)
+
+        self.assert_field_validation_required(parent=pagination_size_elem)