diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index e40eba40ee2..b265ab59cde 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -1234,6 +1234,22 @@ class Contrat extends CommonObject
 			}
 		}
 
+                if (!$error)
+                {
+                        // Delete contratdet extrafields
+                        $main = MAIN_DB_PREFIX . 'contratdet';
+                        $ef = $main . "_extrafields";
+                        $sql = "DELETE FROM $ef WHERE fk_object IN (SELECT rowid FROM $main WHERE fk_contrat = " . $this->id . ")";
+
+                        dol_syslog(get_class($this)."::delete contratdet_extrafields", LOG_DEBUG);
+                        $resql = $this->db->query($sql);
+                        if (!$resql)
+                        {
+                                $this->error = $this->db->error();
+                                $error++;
+                        }
+                }
+
 		if (!$error)
 		{
 			// Delete contratdet