diff --git a/NEWS b/NEWS
index 50e2be39..4fcb585f 100644
--- a/NEWS
+++ b/NEWS
@@ -20,7 +20,7 @@
 - AC_FUNC_SETVBUF_REVERSED no longer fails when cross-compiling.
 - AC_PROG_CC_STDC is integrated into AC_PROG_CC.
 - AC_PROG_F77 default search no longer includes cf77 and cfg77.
-- New macro: AC_GNU_SOURCE.
+- New macros: AC_GNU_SOURCE, AC_TYPE_MBSTATE_T.
 
 ** Bug fixes