diff --git a/src/libsnore/notification/notification_p.cpp b/src/libsnore/notification/notification_p.cpp
index 2cb594e..d686d68 100644
--- a/src/libsnore/notification/notification_p.cpp
+++ b/src/libsnore/notification/notification_p.cpp
@@ -41,7 +41,6 @@ NotificationData::NotificationData(const Snore::Application &application, const
     m_text(text),
     m_icon(icon),
     m_priority(priority),
-    m_closeReason(Notification::NONE),
     m_hints(m_application.constHints())
 {
     notificationCount++;
@@ -58,7 +57,6 @@ Snore::NotificationData::NotificationData(const Notification &old, const QString
     m_text(text),
     m_icon(icon),
     m_priority(priority),
-    m_closeReason(Notification::NONE),
     m_hints(m_application.constHints()),
     m_toReplace(old)
 {
@@ -105,3 +103,13 @@ QString NotificationData::resolveMarkup(const QString &string, Utils::MARKUP_FLA
     }
 }
 
+void NotificationData::setBroadcasted()
+{
+    m_isBroadcasted = true;
+}
+
+bool NotificationData::isBroadcasted() const
+{
+    return m_isBroadcasted;
+}
+
diff --git a/src/libsnore/notification/notification_p.h b/src/libsnore/notification/notification_p.h
index c3e0031..ea4d2eb 100644
--- a/src/libsnore/notification/notification_p.h
+++ b/src/libsnore/notification/notification_p.h
@@ -50,6 +50,10 @@ public:
 
     QString resolveMarkup(const QString &string, Utils::MARKUP_FLAGS flags);
 
+    void setBroadcasted();
+
+    bool isBroadcasted() const;
+
 private:
     Q_DISABLE_COPY(NotificationData)
 
@@ -62,13 +66,14 @@ private:
     QString m_text;
     Icon m_icon;
     Notification::Prioritys m_priority;
-    Notification::CloseReasons m_closeReason;
+    Notification::CloseReasons m_closeReason = Notification::NONE;
     Action m_actionInvoked;
     QHash<int, Action> m_actions;
     Hint m_hints;
     Notification m_toReplace;
     QScopedPointer<QTimer> m_timeoutTimer;
     QSet<const QObject *> m_activeIn;
+    bool m_isBroadcasted = false;
 
     static uint notificationCount;
     static uint m_idCount;
diff --git a/src/libsnore/snore.cpp b/src/libsnore/snore.cpp
index 9c12b42..c136633 100644
--- a/src/libsnore/snore.cpp
+++ b/src/libsnore/snore.cpp
@@ -113,12 +113,18 @@ void SnoreCore::loadPlugins(SnorePlugin::PluginTypes types)
 void SnoreCore::broadcastNotification(Notification notification)
 {
     Q_D(SnoreCore);
+    Q_ASSERT_X(!notification.data()->isBroadcasted(), Q_FUNC_INFO, "Notification was already broadcasted.");
+    if (notification.data()->isBroadcasted()) {
+        snoreDebug(SNORE_WARNING) <<  "Notification" << notification << "was already broadcasted.";
+        return;
+    }
     snoreDebug(SNORE_DEBUG) << "Broadcasting" << notification << "timeout:" << notification.timeout();
     if (d->m_notificationBackend != nullptr) {
         if (notification.isUpdate() && !d->m_notificationBackend->canUpdateNotification()) {
             requestCloseNotification(notification.old(), Notification::REPLACED);
         }
     }
+    notification.data()->setBroadcasted();
     emit d->notify(notification);
 }