diff --git a/qad/widgets/qcodeedit.cpp b/qad/widgets/qcodeedit.cpp
index 551e79b..a88079e 100644
--- a/qad/widgets/qcodeedit.cpp
+++ b/qad/widgets/qcodeedit.cpp
@@ -157,6 +157,8 @@ void QCodeEdit::setDocument(QTextDocument * doc) {
 		document()->setProperty("_cursor", QVariant::fromValue(textCursor()));
 		document()->setProperty("_vpos", textEdit()->verticalScrollBar()->value());
 	}
+	ui->textCode->setEnabled(doc);
+	ui->textLines->setEnabled(doc);
 	documentUnset();
 	if (!doc) {
 		ui->textCode->setDocument(0);