gistfile1.diff

diff --git a/bp-notifications/bp-notifications-classes.php b/bp-notifications/bp-notifications-classes.php
index 3aed496..4556c07 100644
--- a/bp-notifications/bp-notifications-classes.php
+++ b/bp-notifications/bp-notifications-classes.php
@@ -317,7 +317,7 @@ class BP_Notifications_Notification {
 		// is_new
 		if ( ! empty( $args['is_new'] ) ) {
 			$where_conditions['is_new'] = "is_new = 1";
-		} elseif ( ( 0 === $args['is_new'] ) || ( false === $args['is_new'] ) ) {
+		} elseif ( isset( $args['is_new'] ) && ( 0 === $args['is_new'] || false === $args['is_new'] ) ) {
 			$where_conditions['is_new'] = "is_new = 0";
 		}