diff --git a/appl/rsh/rsh_locl.h b/appl/rsh/rsh_locl.h
index 088729772..6f89a87c8 100644
--- a/appl/rsh/rsh_locl.h
+++ b/appl/rsh/rsh_locl.h
@@ -99,6 +99,7 @@
 #ifdef KRB5
 #include <krb5.h>
 /* XXX */
+struct hx509_certs_data;
 struct krb5_pk_identity;
 struct krb5_pk_cert;
 struct ContentInfo;