diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index c5dd1045f03..aca817e0193 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -1448,7 +1448,7 @@ class Project extends CommonObject
 			}
 		}
 
-		$clone_project->datec = $now;
+		$clone_project->date_c = $now;
 
 		if (!$clone_note)
 		{