diff --git a/m4/ChangeLog b/m4/ChangeLog
index a5b97486a..f2ee52b33 100644
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,7 @@
+1999-03-19  Jim Meyering  <meyering@ascend.com>
+
+	* jm-winsz1.m4 (jm_WINSIZE_IN_PTEM): New macro.
+
 1999-03-12  Jim Meyering  <meyering@ascend.com>
 
 	* jm-macros.m4: Use AC_FUNC_SETVBUF_REVERSED.