diff --git a/pglab/DatabaseWindow.cpp b/pglab/DatabaseWindow.cpp
index c8e86b7..6ce4cf6 100644
--- a/pglab/DatabaseWindow.cpp
+++ b/pglab/DatabaseWindow.cpp
@@ -389,7 +389,7 @@ void DatabaseWindow::on_actionCopy_triggered()
 	}
 	else {
 		const QMetaObject *meta = w->metaObject();
-		int i = meta->indexOfSlot("copy");
+		int i = meta->indexOfMethod("copy()");
 		if (i != -1) {
 			QMetaMethod method = meta->method(i);
 			method.invoke(w, Qt::AutoConnection);
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*/)
diff --git a/pglablib/catalog/PgTrigger.cpp b/pglablib/catalog/PgTrigger.cpp
index ba1ef9c..920a612 100644
--- a/pglablib/catalog/PgTrigger.cpp
+++ b/pglablib/catalog/PgTrigger.cpp
@@ -91,12 +91,18 @@ QString PgTrigger::event() const
 	QString event;
 	if (type & TriggerTypeInsert)
 		event += "INSERT ";
-	if (type & TriggerTypeUpdate)
+	if (type & TriggerTypeUpdate) {
+		if (!event.isEmpty()) event += "OR ";
 		event += "UPDATE ";
-	if (type & TriggerTypeDelete)
+	}
+	if (type & TriggerTypeDelete) {
+		if (!event.isEmpty()) event += "OR ";
 		event += "DELETE ";
-	if (type & TriggerTypeTruncate)
+	}
+	if (type & TriggerTypeTruncate) {
+		if (!event.isEmpty()) event += "OR ";
 		event += "TRUNCATE";
+	}
 	return event.trimmed();
 }