diff --git a/lib/kadm5/admin.h b/lib/kadm5/admin.h
index 0891429a0..ff5b6469d 100644
--- a/lib/kadm5/admin.h
+++ b/lib/kadm5/admin.h
@@ -65,6 +65,7 @@
 #define KRB5_KDB_SUPPORT_DESMD5		0x00004000
 #define KRB5_KDB_NEW_PRINC		0x00008000
 #define KRB5_KDB_OK_AS_DELEGATE		0x00010000
+#define KRB5_KDB_TRUSTED_FOR_DELEGATION	0x00020000
 
 #define KADM5_PRINCIPAL		0x000001
 #define KADM5_PRINC_EXPIRE_TIME	0x000002