diff --git a/kuser/Makefile.am b/kuser/Makefile.am
index b6fcaaeb9..b68e25e46 100644
--- a/kuser/Makefile.am
+++ b/kuser/Makefile.am
@@ -2,7 +2,7 @@
 
 include $(top_srcdir)/Makefile.am.common
 
-INCLUDES += $(INCLUDE_krb4)
+INCLUDES += $(INCLUDE_krb4) $(INCLUDE_des) -I$(srcdir)/../lib/krb5
 
 man_MANS = kinit.1 klist.1 kdestroy.1 kgetcred.1