diff --git a/kdc/kerberos4.c b/kdc/kerberos4.c
index 2fc946a38..a78b0e164 100644
--- a/kdc/kerberos4.c
+++ b/kdc/kerberos4.c
@@ -31,6 +31,8 @@
  * SUCH DAMAGE.
  */
 
+#define KRB5_DEPRECATED /* uses v4 functions that will die */
+
 #include "kdc_locl.h"
 
 #ifdef KRB4