diff --git a/toonz/sources/toonz/frameheadgadget.cpp b/toonz/sources/toonz/frameheadgadget.cpp
index e6ab484..dc318d3 100644
--- a/toonz/sources/toonz/frameheadgadget.cpp
+++ b/toonz/sources/toonz/frameheadgadget.cpp
@@ -659,3 +659,4 @@ public:
     enableOnionSkin(checked);
   }
 } onionSkinToggle;
+
diff --git a/toonz/sources/toonz/frameheadgadget.h b/toonz/sources/toonz/frameheadgadget.h
index 0fcf9fb..0255bb2 100644
--- a/toonz/sources/toonz/frameheadgadget.h
+++ b/toonz/sources/toonz/frameheadgadget.h
@@ -11,6 +11,7 @@ class FilmstripFrames;
 class QEvent;
 class QColor;
 class QWidget;
+class QMenu;
 
 class FrameHeadGadget : public QObject {
   Q_OBJECT
diff --git a/toonz/sources/toonz/mainwindow.cpp b/toonz/sources/toonz/mainwindow.cpp
index 67e1716..dca6202 100644
--- a/toonz/sources/toonz/mainwindow.cpp
+++ b/toonz/sources/toonz/mainwindow.cpp
@@ -1885,6 +1885,8 @@ void MainWindow::defineActions() {
 
   createToggle(MI_OnionSkin, tr("Onion Skin"), "", false,
                RightClickMenuCommandType);
+  createToggle(MI_ZeroThick, tr("Zero Thick Lines"), "Shift+/", false, 
+               RightClickMenuCommandType);
 
   // createRightClickMenuAction(MI_LoadSubSceneFile,     tr("Load As
   // Sub-xsheet"),   "");
diff --git a/toonz/sources/toonz/menubarcommandids.h b/toonz/sources/toonz/menubarcommandids.h
index 8daabe2..09c5fb4 100644
--- a/toonz/sources/toonz/menubarcommandids.h
+++ b/toonz/sources/toonz/menubarcommandids.h
@@ -222,6 +222,7 @@
 #define MI_ResetRoomLayout "MI_ResetRoomLayout"
 
 #define MI_OnionSkin "MI_OnionSkin"
+#define MI_ZeroThick "MI_ZeroThick"
 
 //#define MI_LoadResourceFile       "MI_LoadResourceFile"
 #define MI_DuplicateFile "MI_DuplicateFile"
diff --git a/toonz/sources/toonz/sceneviewercontextmenu.cpp b/toonz/sources/toonz/sceneviewercontextmenu.cpp
index c992e07..6ea36a1 100644
--- a/toonz/sources/toonz/sceneviewercontextmenu.cpp
+++ b/toonz/sources/toonz/sceneviewercontextmenu.cpp
@@ -25,6 +25,7 @@
 #include "toonz/tframehandle.h"
 #include "toonz/tobjecthandle.h"
 #include "toonz/tstageobjecttree.h"
+#include "toonz/tscenehandle.h"
 #include "toonz/txshcolumn.h"
 #include "toonz/tstageobjectspline.h"
 #include "toonz/tstageobjectid.h"
@@ -176,6 +177,10 @@ SceneViewerContextMenu::SceneViewerContextMenu(SceneViewer *parent)
       !parent->isPreviewEnabled())
     OnioniSkinMaskGUI::addOnionSkinCommand(this);
 
+  // Zero Thick
+	if (!parent->isPreviewEnabled())
+		ZeroThickToggleGui::addZeroThickCommand(this);
+
   // preview
   if (parent->isPreviewEnabled()) {
     addSeparator();
@@ -387,3 +392,45 @@ void SceneViewerContextMenu::savePreviewedFrames() {
                       SceneViewer::SUBCAMERA_PREVIEW)
       ->saveRenderedFrames();
 }
+
+
+
+class ZeroThickToggle : public MenuItemHandler {
+public:
+	ZeroThickToggle() : MenuItemHandler(MI_ZeroThick) {}
+	void execute() {
+		QAction *action = CommandManager::instance()->getAction(MI_ZeroThick);
+		if (!action)
+			return;
+		bool checked = action->isChecked();
+		enableZeroThick(checked);
+	}
+
+	static void enableZeroThick(bool enable = true)	{
+		Preferences::instance()->setShow0ThickLines(enable);
+		TApp::instance()->getCurrentScene()->notifySceneChanged();
+	}
+} ZeroThickToggle;
+
+
+void ZeroThickToggleGui::addZeroThickCommand(QMenu *menu) {
+	static ZeroThickToggleHandler switcher;
+	if (Preferences::instance()->getShow0ThickLines()) {
+		QAction *hideZeroThick = menu->addAction(QString(QObject::tr("Hide Zero Thickness Lines")));
+		menu->connect(hideZeroThick, SIGNAL(triggered()),
+			&switcher, SLOT(deactivate()));
+	}
+	else {
+		QAction *showZeroThick = menu->addAction(QString(QObject::tr("Show Zero Thickness Lines")));
+		menu->connect(showZeroThick, SIGNAL(triggered()),
+			&switcher, SLOT(activate()));
+	}
+}
+
+void ZeroThickToggleGui::ZeroThickToggleHandler::activate() {
+	ZeroThickToggle::enableZeroThick(true);
+}
+
+void ZeroThickToggleGui::ZeroThickToggleHandler::deactivate() {
+	ZeroThickToggle::enableZeroThick(false);
+}
\ No newline at end of file
diff --git a/toonz/sources/toonz/sceneviewercontextmenu.h b/toonz/sources/toonz/sceneviewercontextmenu.h
index 8d58e81..e9ada49 100644
--- a/toonz/sources/toonz/sceneviewercontextmenu.h
+++ b/toonz/sources/toonz/sceneviewercontextmenu.h
@@ -36,4 +36,18 @@ public slots:
   void onSetCurrent();
 };
 
+namespace ZeroThickToggleGui {
+	void addZeroThickCommand(QMenu* menu);
+
+	class ZeroThickToggleHandler : public QObject {
+		Q_OBJECT
+
+			public slots:
+		void activate();
+		void deactivate();
+	};
+
+
+} //Namespace ZeroThickToggleGui
+
 #endif