diff --git a/code/SecurityAdmin.php b/code/SecurityAdmin.php
index 0bfde258..bdbfbe4b 100644
--- a/code/SecurityAdmin.php
+++ b/code/SecurityAdmin.php
@@ -169,12 +169,7 @@ class SecurityAdmin extends LeftAndMain implements PermissionProvider {
 				'Roles',
 				'PermissionRole'
 			);
-			// Necessary to make Permission code checkboxes behave consistently
-			$rolesCTF->requirementsForPopupCallback = create_function(
-				'$popup', 
-				'Requirements::javascript(CMS_DIR . "/javascript/MemberTableField.js");'
-			);
-			
+
 			$rolesTab = $fields->findOrMakeTab('Root.Roles', _t('SecurityAdmin.TABROLES', 'Roles'));
 			$rolesTab->push(new LiteralField(
 				'RolesDescription', 
diff --git a/javascript/MemberTableField.js b/javascript/MemberTableField.js
index 1663c2d4..e1607782 100755
--- a/javascript/MemberTableField.js
+++ b/javascript/MemberTableField.js
@@ -278,42 +278,4 @@ MemberFilterButton.prototype = {
 // has to be external from initialize() because otherwise request will double on each reload - WTF
 Behaviour.register({
 	'#Form_EditForm div.MemberTableField table.data input.text' : AjaxMemberLookup
-});
-
-(function($) {
-	var checkboxBehaviour = {
-		initialize: function() {
-			this.toggleCheckboxes();
-		},
-		onclick: function(e) {
-			this.toggleCheckboxes();
-		},
-		toggleCheckboxes: function() {
-			var checkboxes = $(this).parents('.field:eq(0)').find('.checkbox').not(this);
-
-			if($(this).is(':checked')) {
-				checkboxes.each(function() {
-					$(this).data('SecurityAdmin.oldChecked', $(this).attr('checked'));
-					$(this).data('SecurityAdmin.oldDisabled', $(this).attr('disabled'));
-					$(this).attr('disabled', 'disabled');
-					$(this).attr('checked', 'checked');
-				});
-			} else {
-				checkboxes.each(function() {
-					$(this).attr('checked', $(this).data('SecurityAdmin.oldChecked'));
-					$(this).attr('disabled', $(this).data('SecurityAdmin.oldDisabled'));
-				});
-			}
-		}
-	};
-	
-	Behaviour.register({
-		/**
-		 * Automatically check and disable all checkboxes if ADMIN permissions are selected.
-		 * As they're disabled, any changes won't be submitted (which is intended behaviour),
-		 * checking all boxes is purely presentational.
-		 */
-		'#Permissions .valADMIN input': checkboxBehaviour,
-		'#Codes .valADMIN input': checkboxBehaviour
-	});
-}(jQuery));
\ No newline at end of file
+});
\ No newline at end of file