diff --git a/uppsrc/CtrlCore/CocoApp.mm b/uppsrc/CtrlCore/CocoApp.mm
index f36e760f4..6b1b855d9 100644
--- a/uppsrc/CtrlCore/CocoApp.mm
+++ b/uppsrc/CtrlCore/CocoApp.mm
@@ -293,7 +293,7 @@ Rect Ctrl::GetWorkArea() const
 Rect MakeScreenRect(NSScreen *screen, CGRect r)
 {
 	r.origin.y = [screen frame].size.height - r.origin.y - r.size.height;
-	return MakeRect(r, DPI(1));
+	return MakeRect(r, Upp::Ctrl::SCL(1));
 }
 
 void Ctrl::GetWorkArea(Array<Rect>& rc)
diff --git a/uppsrc/CtrlCore/CocoCtrl.h b/uppsrc/CtrlCore/CocoCtrl.h
index 7bceccd1d..38fd07976 100644
--- a/uppsrc/CtrlCore/CocoCtrl.h
+++ b/uppsrc/CtrlCore/CocoCtrl.h
@@ -39,3 +39,4 @@ public:
 	static Rect GetScreenArea(Point pt);
 	static double GetDisplayScale()       { return display_scale; }
 	static double GetDisplayUnScale()     { return display_unscale; }
+	static int    SCL(int x)              { return (int)(display_scale * x); }
diff --git a/uppsrc/CtrlCore/CocoDraw.mm b/uppsrc/CtrlCore/CocoDraw.mm
index aae95925f..a19d8a62b 100644
--- a/uppsrc/CtrlCore/CocoDraw.mm
+++ b/uppsrc/CtrlCore/CocoDraw.mm
@@ -153,7 +153,7 @@ bool SystemDraw::IsPaintingOp(const Rect& r) const
 	if(cr.IsEmpty())
 		return false;
 	return true;
-	return nsview ? [(NSView *)nsview needsToDrawRect:MakeRectCG(1.0 / DPI(1) * cr)] : true;
+//	return nsview ? [(NSView *)nsview needsToDrawRect:MakeRectCG(1.0 / DPI(1) * cr)] : true;
 }
 
 Rect SystemDraw::GetPaintRect() const
diff --git a/uppsrc/CtrlCore/CocoMM.h b/uppsrc/CtrlCore/CocoMM.h
index cf51ce31d..9f48ae945 100644
--- a/uppsrc/CtrlCore/CocoMM.h
+++ b/uppsrc/CtrlCore/CocoMM.h
@@ -111,11 +111,6 @@ inline Upp::Rect MakeRect(const CGRect& r, int dpi) {
 	return Upp::RectC(dpi * r.origin.x, dpi * r.origin.y, dpi * r.size.width, dpi * r.size.height);
 }
 
-inline CGRect CGRectDPI(const Upp::Rect& r) {
-	double sc = Upp::GetDPIUnScaleRatio();
-	return CGRectMake(sc * r.left, sc * r.top, sc * r.GetWidth(), sc * r.GetHeight());
-}
-
 #endif
 
 #endif
diff --git a/uppsrc/CtrlCore/CocoProc.mm b/uppsrc/CtrlCore/CocoProc.mm
index 84d0ad282..fede219cc 100644
--- a/uppsrc/CtrlCore/CocoProc.mm
+++ b/uppsrc/CtrlCore/CocoProc.mm
@@ -124,7 +124,7 @@ struct MMImp {
 		}
 		NSPoint np = [view convertPoint:[e locationInWindow] fromView:nil];
 		Rect r = view->ctrl->GetRect();
-		Upp::Point p(DPI(np.x), DPI(np.y));
+		Upp::Point p(Upp::Ctrl::SCL(np.x), Upp::Ctrl::SCL(np.y));
 		coco_mouse_pos = p + r.TopLeft();
 
 		if(event == Ctrl::MOUSEMOVE) {
@@ -300,7 +300,7 @@ struct MMImp {
 		clip.action = info.draggingSourceOperationMask & NSDragOperationMove ? DND_MOVE
 		                                                                     : DND_COPY;
 		NSPoint np = [nsview convertPoint:[info draggingLocation] fromView:nil];
-		coco_mouse_pos = Upp::Point(DPI(np.x), DPI(np.y)) + ctrl->GetScreenRect().TopLeft();
+		coco_mouse_pos = Upp::Point(Upp::Ctrl::SCL(np.x), Upp::Ctrl::SCL(np.y)) + ctrl->GetScreenRect().TopLeft();
 		ctrl->DnD(coco_mouse_pos, clip);
 		if(paste && clip.IsAccepted() && clip.GetAction() == DND_COPY)
 			Ctrl::local_dnd_copy = true;
@@ -358,7 +358,7 @@ struct MMImp {
 	Upp::GuiLock __;
 	if(ctrl) {
 		Upp::SystemDraw w([[NSGraphicsContext currentContext] CGContext], self);
-		Upp::MMImp::Paint(ctrl, w, MakeRect(r, Upp::DPI(1)));
+		Upp::MMImp::Paint(ctrl, w, MakeRect(r, Upp::Ctrl::SCL(1)));
 	}
 }
 
diff --git a/uppsrc/CtrlCore/CocoWin.mm b/uppsrc/CtrlCore/CocoWin.mm
index 1323964ba..b87931086 100644
--- a/uppsrc/CtrlCore/CocoWin.mm
+++ b/uppsrc/CtrlCore/CocoWin.mm
@@ -86,7 +86,7 @@ bool Ctrl::IsWndForeground() const
 
 NSRect DesktopRect(const Rect& r)
 {
-	double scalei = 1.0 / DPI(1);
+	double scalei = 1.0 / Upp::Ctrl::SCL(1);
 	return NSMakeRect(scalei * r.left,
 	                  scalei * (Ctrl::GetScreenArea(r.TopLeft()).GetHeight() - r.top - r.GetHeight()),
 	                  scalei * r.GetWidth(), scalei * r.GetHeight());
@@ -187,6 +187,11 @@ Vector<Ctrl *> Ctrl::GetTopCtrls()
 
 void WakeUpGuiThread();
 
+inline CGRect CGRectDPI(const Upp::Rect& r) {
+	double sc = 1.0 / Upp::Ctrl::SCL(1);
+	return CGRectMake(sc * r.left, sc * r.top, sc * r.GetWidth(), sc * r.GetHeight());
+}
+
 void Ctrl::WndInvalidateRect(const Rect& r)
 {
 	GuiLock __;
@@ -317,7 +322,7 @@ void TopWindow::SyncCaption()
 
 CGSize MMFrameSize(Size sz, dword style)
 {
-	double scale = 1.0 / DPI(1);
+	double scale = 1.0 / Upp::Ctrl::SCL(1);
 	return [NSWindow frameRectForContentRect:
 				(NSRect)CGRectMake(100, 100, scale * sz.cx, scale * sz.cy) styleMask:style].size;
 }
diff --git a/uppsrc/CtrlLib/ChCoco.cpp b/uppsrc/CtrlLib/ChCoco.cpp
index 1c4066321..6d8842271 100644
--- a/uppsrc/CtrlLib/ChCoco.cpp
+++ b/uppsrc/CtrlLib/ChCoco.cpp
@@ -140,11 +140,20 @@ void ChHostSkin()
 
 	SColorPaper_Write(CocoColor(COCO_PAPER));
 
+	if(Atoi(GetEnv("UPP_SCALE__"))) {
+		if(IsDarkTheme())
+			ChDarkSkin();
+		else
+			ChStdSkin();
+		return;
+	}
+
 	SColorFace_Write(CocoColor(COCO_WINDOW, White()));
 	SColorHighlight_Write(CocoColor(COCO_SELECTEDPAPER));
 	SColorHighlightText_Write(CocoColor(COCO_SELECTEDTEXT));
 	SColorText_Write(CocoColor(COCO_TEXT));
 	SColorDisabled_Write(CocoColor(COCO_DISABLED));
+	
 
 	ChBaseSkin();
 
diff --git a/upptst/TestChStyle/main.cpp b/upptst/TestChStyle/main.cpp
index 82854cd2e..2449d67da 100644
--- a/upptst/TestChStyle/main.cpp
+++ b/upptst/TestChStyle/main.cpp
@@ -189,7 +189,9 @@ TestChStyle::TestChStyle()
 GUI_APP_MAIN
 {
 	RDUMPM(Environment());
+
 	RDUMP(GetDPIScale());
+	RDUMP(GetDPIScaleRatio());
 
 	RDUMP(SColorDisabled());
 	RDUMP(SColorText());