diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index eff3ac9..cd5bc89 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -292,6 +292,8 @@ MainWindow::~MainWindow()
 	delete fOpenPanel;
 	delete fImportPanel;
 	delete fExportPanel;
+
+	gDatabase.RemoveObserver(this);
 }