--- a/widget/windows/nsWindowBase.cpp
+++ b/widget/windows/nsWindowBase.cpp
@@ -85,18 +85,18 @@ nsWindowBase::InjectTouchPoint(uint32_t 
   info.touchFlags = TOUCH_FLAG_NONE;
   info.touchMask = TOUCH_MASK_CONTACTAREA|TOUCH_MASK_ORIENTATION|TOUCH_MASK_PRESSURE;
   info.pressure = aPressure;
   info.orientation = aOrientation;
   
   info.pointerInfo.pointerFlags = aFlags;
   info.pointerInfo.pointerType =  PT_TOUCH;
   info.pointerInfo.pointerId = aId;
-  info.pointerInfo.ptPixelLocation.x = LogToPhys(aPointerScreenPoint.x);
-  info.pointerInfo.ptPixelLocation.y = LogToPhys(aPointerScreenPoint.y);
+  info.pointerInfo.ptPixelLocation.x = aPointerScreenPoint.x;
+  info.pointerInfo.ptPixelLocation.y = aPointerScreenPoint.y;
 
   info.rcContact.top = info.pointerInfo.ptPixelLocation.y - 2;
   info.rcContact.bottom = info.pointerInfo.ptPixelLocation.y + 2;
   info.rcContact.left = info.pointerInfo.ptPixelLocation.x - 2;
   info.rcContact.right = info.pointerInfo.ptPixelLocation.x + 2;
   
   if (!sInjectTouchFuncPtr(1, &info)) {
     WinUtils::Log("InjectTouchInput failure. GetLastError=%d", GetLastError());