diff --git a/htdocs/projet/activity/perday.php b/htdocs/projet/activity/perday.php
index 8215eec4258..199591922aa 100644
--- a/htdocs/projet/activity/perday.php
+++ b/htdocs/projet/activity/perday.php
@@ -210,7 +210,7 @@ if ($action == 'addtime' && $user->rights->projet->lire && GETPOST('assigntask')
 		{
 			// Test if we are already contact of the project (should be rare but sometimes we can add as task contact without being contact of project, like when admin user has been removed from contact of project)
 			$sql = 'SELECT ec.rowid FROM '.MAIN_DB_PREFIX.'element_contact as ec, '.MAIN_DB_PREFIX.'c_type_contact as tc WHERE tc.rowid = ec.fk_c_type_contact';
-			$sql .= ' AND ec.fk_socpeople = '.$idfortaskuser." AND ec.element_id = '.$object->fk_project.' AND tc.element = 'project' AND source = 'internal'";
+			$sql .= ' AND ec.fk_socpeople = '.$idfortaskuser." AND ec.element_id = ".$object->fk_project." AND tc.element = 'project' AND source = 'internal'";
 			$resql = $db->query($sql);
 			if ($resql)
 			{
diff --git a/htdocs/projet/activity/perweek.php b/htdocs/projet/activity/perweek.php
index 4488342ab73..0db7bf57f3a 100644
--- a/htdocs/projet/activity/perweek.php
+++ b/htdocs/projet/activity/perweek.php
@@ -224,7 +224,7 @@ if ($action == 'addtime' && $user->rights->projet->lire && GETPOST('assigntask')
 		{
 			// Test if we are already contact of the project (should be rare but sometimes we can add as task contact without being contact of project, like when admin user has been removed from contact of project)
 			$sql = 'SELECT ec.rowid FROM '.MAIN_DB_PREFIX.'element_contact as ec, '.MAIN_DB_PREFIX.'c_type_contact as tc WHERE tc.rowid = ec.fk_c_type_contact';
-			$sql .= ' AND ec.fk_socpeople = '.$idfortaskuser." AND ec.element_id = '.$object->fk_project.' AND tc.element = 'project' AND source = 'internal'";
+			$sql .= ' AND ec.fk_socpeople = '.$idfortaskuser." AND ec.element_id = ".$object->fk_project." AND tc.element = 'project' AND source = 'internal'";
 			$resql = $db->query($sql);
 			if ($resql)
 			{