diff --git a/htdocs/product/stock/class/entrepot.class.php b/htdocs/product/stock/class/entrepot.class.php
index 593b5f1bcea..e857166e392 100644
--- a/htdocs/product/stock/class/entrepot.class.php
+++ b/htdocs/product/stock/class/entrepot.class.php
@@ -346,6 +346,7 @@ class Entrepot extends CommonObject
 			{
 				$error++;
 				$this->errors[] = $this->db->lasterror();
+				dol_syslog(get_class($this)."::delete Error ".$this->db->lasterror(), LOG_ERR);
 			}
 		}
 
@@ -358,6 +359,7 @@ class Entrepot extends CommonObject
 			{
 				$error++;
 				$this->errors[] = $this->db->lasterror();
+				dol_syslog(get_class($this)."::delete Error ".$this->db->lasterror(), LOG_ERR);
 			}
 		}
 
diff --git a/test/phpunit/EntrepotTest.php b/test/phpunit/EntrepotTest.php
index 16555d88e39..a2c0e78ee96 100644
--- a/test/phpunit/EntrepotTest.php
+++ b/test/phpunit/EntrepotTest.php
@@ -238,7 +238,7 @@ class EntrepotTest extends PHPUnit_Framework_TestCase
 
     	$result=$localobject->delete($user);
 		print __METHOD__." id=".$id." result=".$result."\n";
-    	$this->assertLessThan($result, 0);
+    	$this->assertLessThan($result, 0, $localobject->errorsToString());
 
     	return $result;
     }