diff --git a/htdocs/core/lib/company.lib.php b/htdocs/core/lib/company.lib.php
index 14fa5b0cb17..77d24c891b5 100644
--- a/htdocs/core/lib/company.lib.php
+++ b/htdocs/core/lib/company.lib.php
@@ -904,7 +904,7 @@ function show_projects($conf, $langs, $db, $object, $backtopage = '', $nocreatel
 			print '<tr class="liste_titre">';
 			if (getDolGlobalString('MAIN_CHECKBOX_LEFT_COLUMN')) {
 				print '<td class="center">';
-				$selectedfields = (count($arrayofmassactions) ? $form->showCheckAddButtons('checkforselect', 1) : '');
+				$selectedfields = (is_array($arrayofmassactions) && count($arrayofmassactions) ? $form->showCheckAddButtons('checkforselect', 1) : '');
 				print $selectedfields;
 				print '</td>';
 			}