diff --git a/ChangeLog b/ChangeLog
index 2156a70ed..8a67a9a4e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-05-26  Clint Adams  <clint@zsh.org>
+
+	* 22465: Config/defs.mk.in: add datarootdir for substitution
+	in order to cope with change in autoconf CVS.
+
 2006-05-26  Peter Stephenson  <p.w.stephenson@ntlworld.com>
 
 	* 22464: Src/Zle/zle_main.c: an error in prompt substitution could
diff --git a/Config/defs.mk.in b/Config/defs.mk.in
index 52061a45e..c5794aeef 100644
--- a/Config/defs.mk.in
+++ b/Config/defs.mk.in
@@ -40,6 +40,7 @@ libdir          = @libdir@
 MODDIR          = $(libdir)/$(tzsh)/$(VERSION)
 infodir         = @infodir@
 mandir          = @mandir@
+datarootdir     = @datarootdir@
 datadir         = @datadir@
 fndir           = @fndir@
 sitefndir       = @sitefndir@