diff --git a/search/add.php b/search/add.php
index 8871ae6bedbb5..c919aefc8dca6 100644
--- a/search/add.php
+++ b/search/add.php
@@ -30,7 +30,7 @@
     global $DB;
 
 /// makes inclusions of the Zend Engine more reliable
-    ini_set('include_path', $CFG->dirroot.PATH_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
+    ini_set('include_path', $CFG->dirroot.DIRECTORY_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
 
     require_once($CFG->dirroot.'/search/lib.php');
     require_once($CFG->dirroot.'/search/indexlib.php');
diff --git a/search/delete.php b/search/delete.php
index a6883c1c57860..b747e776c5230 100644
--- a/search/delete.php
+++ b/search/delete.php
@@ -28,7 +28,7 @@
     global $DB;
 
 /// makes inclusions of the Zend Engine more reliable                               
-    ini_set('include_path', $CFG->dirroot.PATH_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
+    ini_set('include_path', $CFG->dirroot.DIRECTORY_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
 
     require_once($CFG->dirroot.'/search/lib.php');
     require_once($CFG->dirroot.'/search/indexlib.php');        
diff --git a/search/indexer.php b/search/indexer.php
index 2cbf011ae9f04..4b8efc08906e2 100644
--- a/search/indexer.php
+++ b/search/indexer.php
@@ -37,7 +37,7 @@
 require_once('../config.php');
 require_once($CFG->dirroot.'/search/lib.php');
 
-    ini_set('include_path', $CFG->dirroot.PATH_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
+    ini_set('include_path', $CFG->dirroot.DIRECTORY_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
 
 /// only administrators can index the moodle installation, because access to all pages is required
 
diff --git a/search/indexersplash.php b/search/indexersplash.php
index 37ac4e632151a..8f80e69156874 100644
--- a/search/indexersplash.php
+++ b/search/indexersplash.php
@@ -21,7 +21,7 @@
     require_once('../config.php');
     
     /// makes inclusions of the Zend Engine more reliable
-    ini_set('include_path', $CFG->dirroot.PATH_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
+    ini_set('include_path', $CFG->dirroot.DIRECTORY_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
     
     require_once($CFG->dirroot.'/search/lib.php');
     
diff --git a/search/tests/index.php b/search/tests/index.php
index 541f476796a01..625d3708f2686 100644
--- a/search/tests/index.php
+++ b/search/tests/index.php
@@ -24,7 +24,7 @@
     require_once('../../config.php');
 
 /// makes inclusions of the Zend Engine more reliable
-    ini_set('include_path', $CFG->dirroot.PATH_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
+    ini_set('include_path', $CFG->dirroot.DIRECTORY_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
 
     require_once($CFG->dirroot.'/search/lib.php');
 
diff --git a/search/update.php b/search/update.php
index 2b51b9581b620..0e55bab3ad664 100644
--- a/search/update.php
+++ b/search/update.php
@@ -28,7 +28,7 @@
     global $DB;
 
 /// makes inclusions of the Zend Engine more reliable                               
-    ini_set('include_path', $CFG->dirroot.PATH_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
+    ini_set('include_path', $CFG->dirroot.DIRECTORY_SEPARATOR.'search'.PATH_SEPARATOR.ini_get('include_path'));
 
     require_once($CFG->dirroot.'/search/lib.php');
     require_once($CFG->dirroot.'/search/indexlib.php');