diff --git a/kdc/Makefile.am b/kdc/Makefile.am
index 6056ee766..55fbc0498 100644
--- a/kdc/Makefile.am
+++ b/kdc/Makefile.am
@@ -13,7 +13,7 @@ libexec_PROGRAMS = hprop hpropd kdc
 hprop_SOURCES = hprop.c hprop-common.c
 hpropd_SOURCES = hpropd.c hprop-common.c
 
-kdc_SOURCES = connect.c config.c kerberos4.c kerberos5.c log.c main.c misc.c
+kdc_SOURCES = 524.c connect.c config.c kerberos4.c kerberos5.c log.c main.c misc.c
 
 if KRB4
 hprop_LDADD = -L$(top_builddir)/lib/hdb -lhdb -L$(top_builddir)/lib/krb5 -lkrb5 -L$(top_builddir)/lib/des -ldes $(LIB_krb4) -lkdb $(LIB_krb4) -L$(top_builddir)/lib/asn1 -lasn1 -L$(top_builddir)/lib/roken -lroken