diff --git a/gui/src/DataSource/DataSourceWidget.cpp b/gui/src/DataSource/DataSourceWidget.cpp
index 0209719..67bcf4a 100644
--- a/gui/src/DataSource/DataSourceWidget.cpp
+++ b/gui/src/DataSource/DataSourceWidget.cpp
@@ -49,6 +49,11 @@ DataSourceWidget::DataSourceWidget(QWidget *parent) : QWidget{parent}, ui{new Ui
             &DataSourceWidget::onTreeMenuRequested);
 }
 
+DataSourceWidget::~DataSourceWidget() noexcept
+{
+    delete ui;
+}
+
 void DataSourceWidget::addDataSource(DataSourceItem *dataSource) noexcept
 {
     // Creates the item associated to the source and adds it to the tree widget. The tree widget