diff --git a/configure.in b/configure.in
index 6b935c81d..5135ba40b 100644
--- a/configure.in
+++ b/configure.in
@@ -519,6 +519,7 @@ AC_CONFIG_FILES(Makefile 		\
 	lib/com_err/Makefile		\
 	lib/des/Makefile		\
 	lib/editline/Makefile		\
+	lib/hx509/Makefile		\
 	lib/gssapi/Makefile		\
 	lib/hdb/Makefile		\
 	lib/kadm5/Makefile		\