diff --git a/src/GUI.cpp b/src/GUI.cpp
index c42879ba6..3ee21b003 100644
--- a/src/GUI.cpp
+++ b/src/GUI.cpp
@@ -273,6 +273,8 @@ GUI::~GUI(){
   delete DLListModel;
   delete SearchListModel;
   delete SearchDelegate;
+  previewProcess->kill();
+  previewProcess->waitForFinished();
   delete previewProcess;
   delete connecStatusLblIcon;
 }