diff --git a/libnotificationmanager/notificationgroupingproxymodel.cpp b/libnotificationmanager/notificationgroupingproxymodel.cpp
--- a/libnotificationmanager/notificationgroupingproxymodel.cpp
+++ b/libnotificationmanager/notificationgroupingproxymodel.cpp
@@ -44,7 +44,7 @@
     const QString bDesktopEntry = b.data(Notifications::DesktopEntryRole).toString();
 
     return !aName.isEmpty() && aName == bName
-            && !aDesktopEntry.isEmpty() && aDesktopEntry == bDesktopEntry;
+            && aDesktopEntry == bDesktopEntry;
 }
 
 bool NotificationGroupingProxyModel::isGroup(int row) const