diff --git a/include/wx/math.h b/include/wx/math.h
index 121a59062b..611971d471 100644
--- a/include/wx/math.h
+++ b/include/wx/math.h
@@ -57,6 +57,10 @@
 #if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__WATCOMC__)
     #include <float.h>
     #define wxFinite(x) _finite(x)
+#elif defined(__MINGW64__)
+    // add more compilers with C99 support here: using C99 isfinite() is
+    // preferable to using BSD-ish finite()
+    #define wxFinite(x) isfinite(x)
 #elif ( defined(__GNUG__)||defined(__GNUWIN32__)||defined(__DJGPP__)|| \
       defined(__SGI_CC__)||defined(__SUNCC__)||defined(__XLC__)|| \
       defined(__HPUX__)||defined(__MWERKS__) ) && ( !defined(wxOSX_USE_IPHONE) || wxOSX_USE_IPHONE == 0 )