diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 7d6541042573b..419c8ec18de69 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -5889,6 +5889,7 @@ function picto_from_langcode($codelang)
  *          		            	        'supplier_invoice' to add a tab in supplier invoice view
  *                  		    	        'invoice'          to add a tab in customer invoice view
  *                          			    'order'            to add a tab in customer order view
+ *                          				'contract'		   to add a tabl in contract view
  *                      			        'product'          to add a tab in product view
  *                              			'propal'           to add a tab in propal view
  *                              			'user'             to add a tab in user view
diff --git a/htdocs/core/modules/DolibarrModules.class.php b/htdocs/core/modules/DolibarrModules.class.php
index c1c42d2fb4092..c41a889d10e09 100644
--- a/htdocs/core/modules/DolibarrModules.class.php
+++ b/htdocs/core/modules/DolibarrModules.class.php
@@ -1489,10 +1489,14 @@ function insert_tabs()
 					$resql = $this->db->query($sql);
 					if (! $resql)
 					{
-						$err++;
-						$this->error = $this->db->lasterror();
-						$this->errors[] = $this->db->lasterror();
-						break;
+						dol_syslog($this->db->lasterror(), LOG_ERR);
+						if ($this->db->lasterrno() != 'DB_ERROR_RECORD_ALREADY_EXISTS')
+						{
+							$this->error = $this->db->lasterror();
+							$this->errors[] = $this->db->lasterror();
+							$err++;
+							break;
+						}
 					}
 				}
 				$i++;