diff --git a/libs/widgets/qcodeedit.cpp b/libs/widgets/qcodeedit.cpp
index cb73bd1..64d5035 100644
--- a/libs/widgets/qcodeedit.cpp
+++ b/libs/widgets/qcodeedit.cpp
@@ -548,6 +548,7 @@ bool QCodeEdit::eventFilter(QObject * o, QEvent * e) {
 
 
 void QCodeEdit::showEvent(QShowEvent *) {
+	detectTheme();
 	if (!_first) return;
 	_first = false;
 	completer->installEventFilter(this);
@@ -584,7 +585,7 @@ void QCodeEdit::changeEvent(QEvent * e) {
 		ui->retranslateUi(this);
 		lbl_help[lhF1]->setText(tr("Press F1 for details"));
 		break;
-	case QEvent::PaletteChange: is_dark_theme = palette().color(QPalette::Window).valueF() < 0.5; break;
+	case QEvent::PaletteChange: detectTheme(); break;
 	default: break;
 	}
 }
@@ -1716,6 +1717,11 @@ QCodeEdit::ACEntry QCodeEdit::findEntryOnCursor(QTextCursor tc, int arg, ACClass
 }
 
 
+void QCodeEdit::detectTheme() {
+	is_dark_theme = palette().color(QPalette::Window).valueF() < 0.5;
+}
+
+
 void QCodeEdit::raiseHelp(QTextCursor tc, int arg) {
 	ACClass acc;
 	QPair<QStringList, QString> scope;
diff --git a/libs/widgets/qcodeedit.h b/libs/widgets/qcodeedit.h
index 64ad940..7caa9aa 100644
--- a/libs/widgets/qcodeedit.h
+++ b/libs/widgets/qcodeedit.h
@@ -230,6 +230,7 @@ private:
 	void createBlockSelection();
 	void cancelDragCursor();
 	ACEntry findEntryOnCursor(QTextCursor tc, int arg = -1, ACClass * acc = nullptr, QPair<QStringList, QString> * scope = nullptr);
+	void detectTheme();
 
 	Ui::QCodeEdit * ui;
 	QCodeEditCompleter * completer;