diff --git a/htdocs/comm/action/class/actioncomm.class.php b/htdocs/comm/action/class/actioncomm.class.php
index 68e358f18eb..9a7114a6113 100644
--- a/htdocs/comm/action/class/actioncomm.class.php
+++ b/htdocs/comm/action/class/actioncomm.class.php
@@ -1558,13 +1558,13 @@ class ActionComm extends CommonObject
 		}
 
 		$canread = 0;
-		if ($user->rights->agenda->myactions->read && $this->authorid == $user->id) {
+		if (!empty($user->rights->agenda->myactions->read) && $this->authorid == $user->id) {
 			$canread = 1; // Can read my event
 		}
-		if ($user->rights->agenda->myactions->read && array_key_exists($user->id, $this->userassigned)) {
+		if (!empty($user->rights->agenda->myactions->read) && array_key_exists($user->id, $this->userassigned)) {
 			$canread = 1; // Can read my event i am assigned
 		}
-		if ($user->rights->agenda->allactions->read) {
+		if (!empty($user->rights->agenda->allactions->read)) {
 			$canread = 1; // Can read all event of other
 		}
 		if (!$canread) {