diff --git a/lib/krb5/Makefile.am b/lib/krb5/Makefile.am
index 31754d5df..98a7d0c23 100644
--- a/lib/krb5/Makefile.am
+++ b/lib/krb5/Makefile.am
@@ -27,6 +27,7 @@ lib_LTLIBRARIES = libkrb5.la
 ERR_FILES = krb5_err.c heim_err.c
 
 libkrb5_la_SOURCES = \
+	add_et_list.c \
 	addr_families.c \
 	address.c \
 	aname_to_localname.c \