diff --git a/qt/lc_qpreferencesdialog.cpp b/qt/lc_qpreferencesdialog.cpp
index 8a640790..380966a7 100644
--- a/qt/lc_qpreferencesdialog.cpp
+++ b/qt/lc_qpreferencesdialog.cpp
@@ -326,8 +326,10 @@ void lcQPreferencesDialog::on_lgeoPathBrowse_clicked()
 		ui->lgeoPath->setText(QDir::toNativeSeparators(result));
 }
 
-void lcQPreferencesDialog::on_ColorTheme_currentIndexChanged()
+void lcQPreferencesDialog::on_ColorTheme_currentIndexChanged(int Index)
 {
+	Q_UNUSED(Index);
+
 	if (QMessageBox::question(this, tr("Reset Colors"), tr("Would you like to also reset the interface colors to match the color theme?")) == QMessageBox::Yes)
 		mOptions->Preferences.SetInterfaceColors(static_cast<lcColorTheme>(ui->ColorTheme->currentIndex()));
 }
diff --git a/qt/lc_qpreferencesdialog.h b/qt/lc_qpreferencesdialog.h
index efc4035b..9b9388dc 100644
--- a/qt/lc_qpreferencesdialog.h
+++ b/qt/lc_qpreferencesdialog.h
@@ -32,7 +32,7 @@ public slots:
 	void on_MinifigSettingsBrowseButton_clicked();
 	void on_povrayExecutableBrowse_clicked();
 	void on_lgeoPathBrowse_clicked();
-	void on_ColorTheme_currentIndexChanged();
+	void on_ColorTheme_currentIndexChanged(int Index);
 	void ColorButtonClicked();
 	void on_antiAliasing_toggled();
 	void on_edgeLines_toggled();