diff --git a/libs/sofia-sip/configure.ac b/libs/sofia-sip/configure.ac
index ca6bd3a82e..9542208cb6 100644
--- a/libs/sofia-sip/configure.ac
+++ b/libs/sofia-sip/configure.ac
@@ -218,7 +218,7 @@ fi
 AC_C_CONST
 AC_C_INLINE
 AC_C_INLINE_DEFINE
-AC_C_BIGENDIAN(AC_DEFINE([__BYTE_ORDER],__BIG_ENDIAN,[Big Endian]),AC_DEFINE([__BYTE_ORDER],__LITTLE_ENDIAN,[Little Endian]))
+AC_C_BIGENDIAN(AC_DEFINE([SWITCH_BYTE_ORDER],__BIG_ENDIAN,[Big Endian]),AC_DEFINE([SWITCH_BYTE_ORDER],__LITTLE_ENDIAN,[Little Endian]))
 
 AC_C_VAR_FUNC
 AC_C_MACRO_FUNCTION