diff --git a/src/msw/control.cpp b/src/msw/control.cpp
index 20ae5ca0dc..cb662e9ad9 100644
--- a/src/msw/control.cpp
+++ b/src/msw/control.cpp
@@ -216,10 +216,10 @@ wxSize wxControl::GetBestSpinerSize(const bool is_vertical) const
     wxSize bestSize(
 #ifdef __SMARTPHONE__
                     0,GetCharHeight()
-#else !__SMARTPHONE__
+#else // !__SMARTPHONE__
                     GetSystemMetrics(is_vertical ? SM_CXVSCROLL : SM_CXHSCROLL),
                     GetSystemMetrics(is_vertical ? SM_CYVSCROLL : SM_CYHSCROLL)
-#endif __SMARTPHONE__/!__SMARTPHONE__
+#endif // __SMARTPHONE__/!__SMARTPHONE__
     );
 
     // correct size as for undocumented MSW variants cases (WinCE and perhaps others)