diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index 0bb30ac..c5148a3 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -534,3 +534,4 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Steffen Klassert <steffen.klassert@secunet.com>");
 MODULE_DESCRIPTION("Crypto userspace configuration API");
+MODULE_ALIAS("net-pf-16-proto-21");