diff --git a/include/crypto/sha.h b/include/crypto/sha.h
index 83e6be5e2707ad..c6c9c1fe460c20 100644
--- a/include/crypto/sha.h
+++ b/include/crypto/sha.h
@@ -82,6 +82,8 @@ struct sha512_state {
 	u8 buf[SHA512_BLOCK_SIZE];
 };
 
+struct shash_desc;
+
 extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
 			      unsigned int len);