Index: kernel/db/cat_tag_processor.php
===================================================================
--- kernel/db/cat_tag_processor.php	(revision 15338)
+++ kernel/db/cat_tag_processor.php	(working copy)
@@ -78,12 +78,14 @@
 		{
 			if ($this->Application->isAdmin) {
 				// link from Admin to Front-end
-				$params['index_file'] = 'index.php';
 				$params['prefix'] = '_FRONT_END_';
 
 				if ( $this->Application->ConfigValue('UseModRewrite') ) {
 					$params['__MOD_REWRITE__'] = 1;
 				}
+				else {
+					$params['index_file'] = 'index.php';
+				}
 			}
 
 			if ( !isset($params['pass']) ) {
@@ -127,14 +129,8 @@
 
 			$params['editing_mode'] = $settings['default_editing_mode'];
 			$params['m_theme'] = $themes_helper->getCurrentThemeId();
-			$params['index_file'] = 'index.php';
-			$params['prefix'] = '_FRONT_END_';
 			$params['admin'] = 1;
 
-			if ($this->Application->ConfigValue('UseModRewrite')) {
-				$params['__MOD_REWRITE__'] = 1;
-			}
-
 			return $this->ItemLink($params);
 		}
 
Index: units/categories/categories_tag_processor.php
===================================================================
--- units/categories/categories_tag_processor.php	(revision 15341)
+++ units/categories/categories_tag_processor.php	(working copy)
@@ -1813,12 +1813,14 @@
 			'editing_mode' => $settings['default_editing_mode'],
 			'pass' => 'm',
 			'admin' => 1,
-			'index_file' => 'index.php'
 		);
 
 		if ($this->Application->ConfigValue('UseModRewrite')) {
 			$url_params['__MOD_REWRITE__'] = 1;
 		}
+		else {
+			$url_params['index_file'] = 'index.php';
+		}
 
 		return $this->Application->HREF($object->GetDBField('NamedParentPath'), '_FRONT_END_', $url_params);
 	}