diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index 2e2b2de1f46..d4d39fde7d2 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -5470,6 +5470,7 @@ if ($action == 'create') {
 					if (!empty($conf->global->INVOICE_CAN_BE_EDITED_EVEN_IF_PAYMENT_DONE) || ($resteapayer == price2num($object->total_ttc, 'MT', 1) && empty($object->paye))) {
 						if (!$objectidnext && $object->is_last_in_cycle()) {
 							if ($usercanunvalidate) {
+								$params['attr']['title'] = '';
 								print dolGetButtonAction($langs->trans('Modify'), '', 'default', $_SERVER['PHP_SELF'].'?facid='.$object->id.'&action=modif&token='.newToken(), '', true, $params);
 							} else {
 								$params['attr']['title'] = $langs->trans('NotEnoughPermissions');
@@ -5500,6 +5501,7 @@ if ($action == 'create') {
 				&& ($object->statut == Facture::STATUS_CLOSED || $object->statut == Facture::STATUS_ABANDONED || ($object->statut == 1 && $object->paye == 1))   // Condition ($object->statut == 1 && $object->paye == 1) should not happened but can be found due to corrupted data
 				&& ((empty($conf->global->MAIN_USE_ADVANCED_PERMS) && $usercancreate) || $usercanreopen)) {				// A paid invoice (partially or completely)
 				if ($object->close_code != 'replaced' || (!$objectidnext)) { 				// Not replaced by another invoice or replaced but the replacement invoice has been deleted
+					$params['attr']['title'] = '';
 					print dolGetButtonAction($langs->trans('ReOpen'), '', 'default', $_SERVER['PHP_SELF'].'?facid='.$object->id.'&action=reopen&token='.newToken(), '', true, $params);
 				} else {
 					$params['attr']['title'] = $langs->trans("DisabledBecauseReplacedInvoice");
@@ -5521,6 +5523,7 @@ if ($action == 'create') {
 			// Validate
 			if ($object->statut == Facture::STATUS_DRAFT && count($object->lines) > 0 && ((($object->type == Facture::TYPE_STANDARD || $object->type == Facture::TYPE_REPLACEMENT || $object->type == Facture::TYPE_DEPOSIT || $object->type == Facture::TYPE_PROFORMA || $object->type == Facture::TYPE_SITUATION) && (!empty($conf->global->FACTURE_ENABLE_NEGATIVE) || $object->total_ttc >= 0)) || ($object->type == Facture::TYPE_CREDIT_NOTE && $object->total_ttc <= 0))) {
 				if ($usercanvalidate) {
+					$params['attr']['title'] = '';
 					print dolGetButtonAction($langs->trans('Validate'), '', 'default', $_SERVER["PHP_SELF"].'?facid='.$object->id.'&action=valid&token='.newToken(), '', true, $params);
 				}
 			}
@@ -5532,8 +5535,10 @@ if ($action == 'create') {
 						print '<span class="butActionRefused classfortooltip" title="'.$langs->trans("DisabledBecauseReplacedInvoice").'">'.$langs->trans('SendMail').'</span>';
 					} else {
 						if ($usercansend) {
+							$params['attr']['title'] = '';
 							print dolGetButtonAction('', $langs->trans('SendMail'), 'default', $_SERVER['PHP_SELF'].'?facid='.$object->id.'&action=presend&mode=init#formmailbeforetitle', '', true, $params);
 						} else {
+							$params['attr']['title'] = '';
 							print dolGetButtonAction('', $langs->trans('SendMail'), 'default', '#', '', false, $params);
 						}
 					}
@@ -5576,6 +5581,7 @@ if ($action == 'create') {
 					} else {
 						// Sometimes we can receive more, so we accept to enter more and will offer a button to convert into discount (but it is not a credit note, just a prepayment done)
 						//print '<a class="butAction" href="'.DOL_URL_ROOT.'/compta/paiement.php?facid='.$object->id.'&amp;action=create&amp;accountid='.$object->fk_account.'">'.$langs->trans('DoPayment').'</a>';
+						$params['attr']['title'] = '';
 						print dolGetButtonAction($langs->trans('DoPayment'), '', 'default', DOL_URL_ROOT.'/compta/paiement.php?facid='.$object->id.'&amp;action=create&amp;accountid='.$object->fk_account, '', true, $params);
 					}
 				}
@@ -5628,6 +5634,7 @@ if ($action == 'create') {
 					$params['attr']['title'] = $langs->trans('AmountPaidMustMatchAmountOfDownPayment');
 					print dolGetButtonAction($langs->trans('ClassifyPaid'), '', 'default', '#', '', false, $params);
 				} else {
+					$params['attr']['title'] = '';
 					print dolGetButtonAction($langs->trans('ClassifyPaid'), '', 'default', $_SERVER['PHP_SELF'].'?facid='.$object->id.'&amp;action=paid', '', true, $params);
 				}
 			}
@@ -5673,12 +5680,14 @@ if ($action == 'create') {
 
 			// Clone
 			if (($object->type == Facture::TYPE_STANDARD || $object->type == Facture::TYPE_DEPOSIT || $object->type == Facture::TYPE_PROFORMA) && $usercancreate) {
+				$params['attr']['title'] = '';
 				print dolGetButtonAction($langs->trans('ToClone'), '', 'default', $_SERVER['PHP_SELF'].'?facid='.$object->id.'&amp;action=clone&amp;object=invoice', '', true, $params);
 			}
 
 			// Clone as predefined / Create template
 			if (($object->type == Facture::TYPE_STANDARD || $object->type == Facture::TYPE_DEPOSIT || $object->type == Facture::TYPE_PROFORMA) && $object->statut == 0 && $usercancreate) {
 				if (!$objectidnext && count($object->lines) > 0) {
+					$params['attr']['title'] = '';
 					print dolGetButtonAction($langs->trans('ChangeIntoRepeatableInvoice'), '', 'default', DOL_URL_ROOT.'/compta/facture/card-rec.php?facid='.$object->id.'&amp;action=create', '', true, $params);
 				}
 			}
@@ -5712,11 +5721,6 @@ if ($action == 'create') {
 
 			// Delete
 			$isErasable = $object->is_erasable();
-			$params = array(
-				'attr' => array(
-					'class' => 'classfortooltip'
-				)
-			);
 			if ($usercandelete || ($usercancreate && $isErasable == 1)) {	// isErasable = 1 means draft with temporary ref (draft can always be deleted with no need of permissions)
 				$enableDelete = false;
 				$deleteHref = '#';
@@ -5737,8 +5741,10 @@ if ($action == 'create') {
 					$deleteHref = $_SERVER["PHP_SELF"].'?facid='.$object->id.'&action=delete&token='.newToken();
 					$enableDelete = true;
 				}
+				$params['attr']['title'] = '';
 				print dolGetButtonAction($htmltooltip, $langs->trans('Delete'), 'delete', $deleteHref, '', $enableDelete, $params);
 			} else {
+				$params['attr']['title'] = '';
 				print dolGetButtonAction($langs->trans('Delete'), $langs->trans('Delete'), 'delete', '#', '', false);
 			}
 		}