diff --git a/htdocs/supplier_proposal/card.php b/htdocs/supplier_proposal/card.php
index e7d14037632..5a4e6cc5de7 100644
--- a/htdocs/supplier_proposal/card.php
+++ b/htdocs/supplier_proposal/card.php
@@ -1412,7 +1412,11 @@ if ($action == 'create') {
 
 			print '<tr>';
 			print '<td>'.$langs->trans("Project").'</td><td colspan="2">';
-			print img_picto('', 'project', 'class="pictofixedwidth"').$formproject->select_projects(($soc->id > 0 ? $soc->id : -1), $projectid, 'projectid', 0, 0, 1, 1, 0, 0, 0, '', 1, 0, 'maxwidth500');
+			$canLinkAll = getDolGlobalString('PROJECT_CAN_ALWAYS_LINK_TO_ALL_SUPPLIERS');
+			$canLinkAll = ($canLinkAll === '' || $canLinkAll === false) ? 0 : $canLinkAll;
+			$currentSocId = ($object->id > 0) ? $object->socid : $socid;
+			$projectSocId = ((int) $canLinkAll == 1) ? -1 : $currentSocId;
+			print img_picto('', 'project', 'class="pictofixedwidth"').$formproject->select_projects($projectSocId, $projectid, 'projectid', 0, 0, 1, 1, 0, 0, 0, '', 1, 0, 'maxwidth500');
 			print ' &nbsp; <a href="'.DOL_URL_ROOT.'/projet/card.php?socid='.$soc->id.'&action=create&status=1&backtopage='.urlencode($_SERVER["PHP_SELF"].'?action=create&socid='.$soc->id).'"><span class="fa fa-plus-circle valignmiddle" title="'.$langs->trans("AddProject").'"></span></a>';
 
 			print '</td>';
@@ -1655,7 +1659,11 @@ if ($action == 'create') {
 			if ($action != 'classify') {
 				$morehtmlref .= '<a class="editfielda" href="'.$_SERVER['PHP_SELF'].'?action=classify&token='.newToken().'&id='.$object->id.'">'.img_edit($langs->transnoentitiesnoconv('SetProject')).'</a> ';
 			}
-			$morehtmlref .= $form->form_project($_SERVER['PHP_SELF'].'?id='.$object->id, (getDolGlobalString('PROJECT_CAN_ALWAYS_LINK_TO_ALL_SUPPLIERS') ? $object->socid : -1), $object->fk_project, ($action == 'classify' ? 'projectid' : 'none'), 0, 0, 0, 1, '', 'maxwidth300');
+			$canLinkAll = getDolGlobalString('PROJECT_CAN_ALWAYS_LINK_TO_ALL_SUPPLIERS');
+			$canLinkAll = ($canLinkAll === '' || $canLinkAll === false) ? 0 : $canLinkAll;
+			$currentSocId = ($object->id > 0) ? $object->socid : $socid;
+			$projectSocId = ((int) $canLinkAll == 1) ? -1 : $currentSocId;
+			$morehtmlref .= $form->form_project($_SERVER['PHP_SELF'].'?id='.$object->id, $projectSocId, $object->fk_project, ($action == 'classify' ? 'projectid' : 'none'), 0, 0, 0, 1, '', 'maxwidth300');
 		} else {
 			if (!empty($object->fk_project)) {
 				$proj = new Project($db);