diff --git a/src/osgDB/FileUtils.cpp b/src/osgDB/FileUtils.cpp
index 994e9de64..20a70b7d9 100644
--- a/src/osgDB/FileUtils.cpp
+++ b/src/osgDB/FileUtils.cpp
@@ -27,8 +27,9 @@
     #define stat64 _stati64
 
     // set up for windows so acts just like unix access().
+#ifndef F_OK
     #define F_OK 4
-
+#endif
 
 #else // unix
 
diff --git a/src/osgViewer/GraphicsWindowWin32.cpp b/src/osgViewer/GraphicsWindowWin32.cpp
index 19b52581c..29b60fc0f 100644
--- a/src/osgViewer/GraphicsWindowWin32.cpp
+++ b/src/osgViewer/GraphicsWindowWin32.cpp
@@ -886,7 +886,7 @@ bool Win32WindowingSystem::setScreenRefreshRate( const osg::GraphicsContext::Scr
     deviceMode.dmFields           = DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY;
     deviceMode.dmPelsWidth        = width;
     deviceMode.dmPelsHeight       = height;
-    deviceMode.dmDisplayFrequency = refreshRate;
+    deviceMode.dmDisplayFrequency = (DWORD)refreshRate;
     
     return changeScreenSettings(si, displayDevice, deviceMode);
 }
@@ -1756,7 +1756,7 @@ void GraphicsWindowWin32::checkEvents()
     if (!_realized) return;
 
     MSG msg;
-    while (::PeekMessage(&msg, _hwnd, NULL, NULL, PM_REMOVE))
+    while (::PeekMessage(&msg, _hwnd, 0, 0, PM_REMOVE))
     {
         ::TranslateMessage(&msg);
         ::DispatchMessage(&msg);
@@ -1830,14 +1830,15 @@ void GraphicsWindowWin32::requestWarpPointer( float x, float y )
 #else
     // MIKEC: NEW CODE
     POINT pt;
-    pt.x=x;
-    pt.y=y;
+    pt.x = (LONG)x;
+    pt.y = (LONG)y;
+
     // convert point in client area coordinates to screen coordinates
-    if (!::ClientToScreen(_hwnd,&pt))
+    if (!::ClientToScreen(_hwnd, &pt))
     {
         reportErrorForScreen("GraphicsWindowWin32::requestWarpPointer() - Unable to convert cursor position to screen coordinates", _traits->screenNum, ::GetLastError());
     }
-    if (!::SetCursorPos(pt.x,pt.y))
+    if (!::SetCursorPos(pt.x, pt.y))
     {
         reportErrorForScreen("GraphicsWindowWin32::requestWarpPointer() - Unable to set cursor position", _traits->screenNum, ::GetLastError());
         return;