diff --git a/lib/hdb/keytab.c b/lib/hdb/keytab.c
index 717f4b865..ebf1fe420 100644
--- a/lib/hdb/keytab.c
+++ b/lib/hdb/keytab.c
@@ -218,7 +218,8 @@ hdb_get_entry(krb5_context context,
 	(*db->hdb_destroy)(context, db);
 	return ret;
     }
-    ret = (*db->hdb_fetch)(context, db, principal, HDB_F_DECRYPT, &ent);
+    ent.entry.principal = rk_UNCONST(principal);
+    ret = (*db->hdb_fetch)(context, db, HDB_F_DECRYPT, &ent);
     (*db->hdb_close)(context, db);
     (*db->hdb_destroy)(context, db);