diff --git a/src/msw/settings.cpp b/src/msw/settings.cpp
index 7601841a0c..280c8dd87c 100644
--- a/src/msw/settings.cpp
+++ b/src/msw/settings.cpp
@@ -377,11 +377,7 @@ static const int gs_metricsMap[] =
 #else
     -1,
 #endif
-#ifdef SM_SWAPBUTTON
     SM_SWAPBUTTON,
-#else
-    -1,
-#endif
     -1   // wxSYS_DCLICK_MSEC - not available as system metric
 };
 
diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index 06e820fe43..35e6934ecb 100644
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -6101,10 +6101,6 @@ WXWORD wxCharCodeWXToMSW(int wxk, bool *isVirtual)
     return vk;
 }
 
-#ifndef SM_SWAPBUTTON
-    #define SM_SWAPBUTTON 23
-#endif
-
 // small helper for wxGetKeyState() and wxGetMouseState()
 static inline bool wxIsKeyDown(WXWORD vk)
 {