diff --git a/grade/import/direct/index.php b/grade/import/direct/index.php
index b014e435642a3..44aabad466a89 100644
--- a/grade/import/direct/index.php
+++ b/grade/import/direct/index.php
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-require_once(__DIR__ . "../../../../config.php");
+require_once(__DIR__ . "/../../../config.php");
 require_once($CFG->libdir.'/gradelib.php');
 require_once($CFG->dirroot.'/grade/lib.php');
 require_once($CFG->dirroot.'/grade/import/lib.php');