diff --git a/quickshell/Services/NotificationService.qml b/quickshell/Services/NotificationService.qml
index 82084098..6af94fe2 100644
--- a/quickshell/Services/NotificationService.qml
+++ b/quickshell/Services/NotificationService.qml
@@ -771,6 +771,11 @@ Singleton {
             interval: {
                 if (!wrapper.notification)
                     return 5000;
+                // Honor an app-specified expire timeout (seconds); -1 means the
+                // app deferred to the server, so fall back to our per-urgency settings.
+                const appTimeout = wrapper.notification.expireTimeout;
+                if (appTimeout >= 0)
+                    return Math.round(appTimeout * 1000);
                 switch (wrapper.urgency) {
                 case NotificationUrgency.Low:
                     return SettingsData.notificationTimeoutLow;