diff --git a/htdocs/projet/tasks.php b/htdocs/projet/tasks.php
index 1b69fd5757e..eafe92c5aa4 100644
--- a/htdocs/projet/tasks.php
+++ b/htdocs/projet/tasks.php
@@ -412,7 +412,7 @@ else
 	}
 
 	print '<table id="tablelines" class="noborder" width="100%">';
-	print '<tr class="liste_titre">';
+	print '<tr class="liste_titre nodrag nodrop">';
 	// print '<td>'.$langs->trans("Project").'</td>';
 	print '<td width="100">'.$langs->trans("RefTask").'</td>';
 	print '<td>'.$langs->trans("LabelTask").'</td>';