diff --git a/pglab/CrudTab.cpp b/pglab/CrudTab.cpp
index f44b0a1..c50d7c8 100644
--- a/pglab/CrudTab.cpp
+++ b/pglab/CrudTab.cpp
@@ -28,7 +28,7 @@ CrudTab::CrudTab(IDatabaseWindow *context, QWidget *parent)
 	auto delegate = new PgLabItemDelegate(ui->tableView);
 	ui->tableView->setItemDelegate(delegate);
 
-	m_crudModel = new CrudModel(parent);
+    m_crudModel = new CrudModel(nullptr);
 
     m_SortFilterProxy = new QSortFilterProxyModel(this);
     m_SortFilterProxy->setSourceModel(m_crudModel);
@@ -48,6 +48,7 @@ CrudTab::CrudTab(IDatabaseWindow *context, QWidget *parent)
 
 CrudTab::~CrudTab()
 {
+    delete m_crudModel;
 	delete ui;
 }
 
diff --git a/pglab/DatabaseWindow.cpp b/pglab/DatabaseWindow.cpp
index a8dbf57..201a414 100644
--- a/pglab/DatabaseWindow.cpp
+++ b/pglab/DatabaseWindow.cpp
@@ -281,8 +281,11 @@ void DatabaseWindow::closeTab(int index)
     if (index < 0)
         return;
 
-    if (canCloseTab(index))
+    if (canCloseTab(index)) {
+        QWidget *widget = m_tabWidget->widget(index);
 		m_tabWidget->removeTab(index);
+        delete widget;
+    }
 }
 
 bool DatabaseWindow::canCloseTab(int index) const