diff --git a/include/api/JsonCallbacks.h b/include/api/JsonCallbacks.h
index d4dac47c..a5c14ce4 100644
--- a/include/api/JsonCallbacks.h
+++ b/include/api/JsonCallbacks.h
@@ -194,6 +194,7 @@ private:
 
 	/// priority muxer instance
 	PriorityMuxer* _prioMuxer;
+
 	/// contains active subscriptions
 	QSet<Subscription::Type> _subscribedCommands;
 
diff --git a/libsrc/api/JsonCallbacks.cpp b/libsrc/api/JsonCallbacks.cpp
index 26db247e..0e156727 100644
--- a/libsrc/api/JsonCallbacks.cpp
+++ b/libsrc/api/JsonCallbacks.cpp
@@ -229,7 +229,8 @@ QStringList JsonCallbacks::unsubscribe(const QJsonArray& subscriptions)
 
 void JsonCallbacks::resetSubscriptions()
 {
-	for (QSet<Subscription::Type>::const_iterator it = _subscribedCommands.constBegin(); it != _subscribedCommands.constEnd(); ++it)
+	const QSet<Subscription::Type> currentSubscriptions = _subscribedCommands;
+	for (QSet<Subscription::Type>::const_iterator it = currentSubscriptions.constBegin(); it != currentSubscriptions.constEnd(); ++it)
 	{
 		unsubscribe(*it);
 	}