diff --git a/pglab/widgets/CatalogConstraintPage.cpp b/pglab/widgets/CatalogConstraintPage.cpp
index 26d12a9..752be3a 100644
--- a/pglab/widgets/CatalogConstraintPage.cpp
+++ b/pglab/widgets/CatalogConstraintPage.cpp
@@ -26,6 +26,7 @@ void CatalogConstraintPage::setFilter(const std::optional<PgClass> &cls)
 {
 	m_constraintModel->setData(m_catalog, cls);
 	m_tableView->resizeColumnsToContents();
+	m_definitionView->setPlainText({});
 }
 
 void CatalogConstraintPage::tableView_selectionChanged(const QItemSelection &/*selected*/, const QItemSelection &/*deselected*/)
diff --git a/pglab/widgets/CatalogIndexPage.cpp b/pglab/widgets/CatalogIndexPage.cpp
index 99bc789..25cafec 100644
--- a/pglab/widgets/CatalogIndexPage.cpp
+++ b/pglab/widgets/CatalogIndexPage.cpp
@@ -26,6 +26,7 @@ void CatalogIndexPage::setFilter(const std::optional<PgClass> &cls)
 {
 	m_indexModel->setData(m_catalog, cls);
 	m_tableView->resizeColumnsToContents();
+	m_definitionView->setPlainText({});
 }
 
 void CatalogIndexPage::tableView_selectionChanged(const QItemSelection &/*selected*/, const QItemSelection &/*deselected*/)