diff --git a/src/xercesc/util/Xerces_autoconf_config.msvc.hpp b/src/xercesc/util/Xerces_autoconf_config.msvc.hpp
index df44aa8096d74aea86285c06da5c0dd0f2070437..9aa4014c38d520255d163621fe04e4f2cb913ff5 100644
--- a/src/xercesc/util/Xerces_autoconf_config.msvc.hpp
+++ b/src/xercesc/util/Xerces_autoconf_config.msvc.hpp
@@ -49,9 +49,9 @@
 #undef XERCES_HAVE_SYS_TYPES_H
 #undef XERCES_HAVE_INTTYPES_H
 
-#define XERCES_S16BIT_INT   INT16
+#define XERCES_S16BIT_INT   signed short
+#define XERCES_U16BIT_INT   unsigned short
 #define XERCES_S32BIT_INT   INT32
-#define XERCES_U16BIT_INT   UINT16
 #define XERCES_U32BIT_INT   UINT32
 
 #ifdef _NATIVE_WCHAR_T_DEFINED