diff --git a/sys/crypto/cast128/cast128.h b/sys/crypto/cast128/cast128.h
deleted file mode 100644
index c316f170cbb7..000000000000
--- a/sys/crypto/cast128/cast128.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*	$FreeBSD$	*/
-
-#ifndef _CAST128_H_
-#define _CAST128_H_
-
-#include <opencrypto/cast.h>
-
-#define cast128_key	cast_key
-
-#define cast128_setkey(key, rawkey, keybytes) \
-	cast_setkey((key), (rawkey), (keybytes))
-#define cast128_encrypt(key, inblock, outblock) \
-	cast_encrypt((key), (inblock), (outblock))
-#define cast128_decrypt(key, inblock, outblock) \
-	cast_decrypt((key), (inblock), (outblock))
-
-#endif /* _CAST128_H_ */
diff --git a/sys/netinet6/esp_core.c b/sys/netinet6/esp_core.c
index 31b3548bed7f..43ea585136cf 100644
--- a/sys/netinet6/esp_core.c
+++ b/sys/netinet6/esp_core.c
@@ -75,7 +75,15 @@
 
 #include <crypto/des/des.h>
 #include <crypto/blowfish/blowfish.h>
-#include <crypto/cast128/cast128.h>
+
+#include <opencrypto/cast.h>
+#define cast128_key	cast_key
+#define cast128_setkey(key, rawkey, keybytes) \
+	cast_setkey((key), (rawkey), (keybytes))
+#define cast128_encrypt(key, inblock, outblock) \
+	cast_encrypt((key), (inblock), (outblock))
+#define cast128_decrypt(key, inblock, outblock) \
+	cast_decrypt((key), (inblock), (outblock))
 
 #include <net/net_osdep.h>
 
diff --git a/sys/opencrypto/cryptosoft.c b/sys/opencrypto/cryptosoft.c
index db3cd75fc491..d251d96438e1 100644
--- a/sys/opencrypto/cryptosoft.c
+++ b/sys/opencrypto/cryptosoft.c
@@ -35,9 +35,9 @@ __FBSDID("$FreeBSD$");
 #include <sys/uio.h>
 
 #include <crypto/blowfish/blowfish.h>
-#include <crypto/cast128/cast128.h>
 #include <crypto/sha1.h>
 #include <opencrypto/rmd160.h>
+#include <opencrypto/cast.h>
 #include <opencrypto/skipjack.h>
 #include <sys/md5.h>