diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index 759e4fc5b..f5855c58d 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -152,6 +152,7 @@ TMainWindow::~TMainWindow()
 {
     delete data;
     delete m;
+    qDeleteAll(hackedWidgets);
     delete ui;
 }