diff --git a/include/crypto/cast5.h b/include/crypto/cast5.h
index dcb90c13dd393..586183a0406e8 100644
--- a/include/crypto/cast5.h
+++ b/include/crypto/cast5.h
@@ -19,4 +19,9 @@ int cast5_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen);
 void __cast5_encrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
 void __cast5_decrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
 
+extern const u32 cast5_s1[256];
+extern const u32 cast5_s2[256];
+extern const u32 cast5_s3[256];
+extern const u32 cast5_s4[256];
+
 #endif