diff --git a/include/wx/defs.h b/include/wx/defs.h
index 0e292d26e8..a1cf5bce7f 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -72,6 +72,13 @@
 #   pragma warning(disable:4511)    /*  copy ctor couldn't be generated */
 #   pragma warning(disable:4512)    /*  operator=() couldn't be generated */
 #   pragma warning(disable:4710)    /*  function not inlined */
+
+/* Deprecated functions such as sprintf, localtime */
+#if __VISUALC__ >= 1400
+#define _CRT_SECURE_NO_DEPRECATE 1
+#define _CRT_NON_CONFORMING_SWPRINTFS 1
+#endif
+
 #endif /*  __VISUALC__ */
 
 /*  suppress some Salford C++ warnings */