diff --git a/src/Preferences.cc b/src/Preferences.cc
index 1cd36456..46bf9fa6 100644
--- a/src/Preferences.cc
+++ b/src/Preferences.cc
@@ -65,7 +65,7 @@ Preferences::Preferences(QWidget *parent) : QMainWindow(parent)
  	this->defaultmap["editor/fontsize"] = 12;
 	this->defaultmap["editor/syntaxhighlight"] = "For Light Background";
 
-#elif defined (Q_OS_MAC)
+#if defined (Q_OS_MAC)
 	this->defaultmap["editor/ctrlmousewheelzoom"] = false;
 #else
 	this->defaultmap["editor/ctrlmousewheelzoom"] = true;
diff --git a/src/Preferences.h b/src/Preferences.h
index d74ada90..62e7ee5e 100644
--- a/src/Preferences.h
+++ b/src/Preferences.h
@@ -32,6 +32,7 @@ public slots:
 	void on_polysetCacheSizeEdit_textChanged(const QString &);
 	void on_opencsgLimitEdit_textChanged(const QString &);
 	void on_forceGoldfeatherBox_toggled(bool);
+	void on_mouseWheelZoomBox_toggled(bool);
 	void on_updateCheckBox_toggled(bool);
 	void on_snapshotCheckBox_toggled(bool);
 	void on_checkNowButton_clicked();
diff --git a/src/editor.cc b/src/editor.cc
index 0cc4f98d..3c0e0194 100644
--- a/src/editor.cc
+++ b/src/editor.cc
@@ -105,7 +105,7 @@ void Editor::zoomOut()
 void Editor::wheelEvent ( QWheelEvent * event )
 {
 	QSettings settings;
-	if (!settings.getValue("editor/ctrlmousewheelzoom").toBool()) {
+	if (!Preferences::inst()->getValue("editor/ctrlmousewheelzoom").toBool()) {
 		return;
 		// see numerous bug reports on mailing list
 	}