diff --git a/plugins/channelrx/sigmffilesink/sigmffilesinkgui.cpp b/plugins/channelrx/sigmffilesink/sigmffilesinkgui.cpp
index c88796bf9..25e7a6a63 100644
--- a/plugins/channelrx/sigmffilesink/sigmffilesinkgui.cpp
+++ b/plugins/channelrx/sigmffilesink/sigmffilesinkgui.cpp
@@ -221,6 +221,7 @@ SigMFFileSinkGUI::SigMFFileSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISe
 
 SigMFFileSinkGUI::~SigMFFileSinkGUI()
 {
+    m_sigMFFileSink->setMessageQueueToGUI(nullptr);
     delete ui;
 }