diff --git a/crypto777/hmac/sha224.c b/crypto777/hmac/sha224.c
index 78a0bfb84..683440d70 100755
--- a/crypto777/hmac/sha224.c
+++ b/crypto777/hmac/sha224.c
@@ -26,7 +26,7 @@ const struct ltc_hash_descriptor sha224_desc =
    9,
 
     &sha224_init,
-    &sha256_process,
+    &sha256i_process,
     &sha224_done,
     &sha224_test,
     NULL
@@ -69,7 +69,7 @@ int sha224_done(hash_state * md, unsigned char *out)
     LTC_ARGCHK(md  != NULL);
     LTC_ARGCHK(out != NULL);
 
-    err = sha256_done(md, buf);
+    err = sha256i_done(md, buf);
     XMEMCPY(out, buf, 28);
 #ifdef LTC_CLEAN_STACK
     zeromem(buf, sizeof(buf));
diff --git a/crypto777/hmac/tomcrypt_hash.h b/crypto777/hmac/tomcrypt_hash.h
index b596c6a37..de5977437 100755
--- a/crypto777/hmac/tomcrypt_hash.h
+++ b/crypto777/hmac/tomcrypt_hash.h
@@ -228,9 +228,9 @@ extern const struct ltc_hash_descriptor sha384_desc;
 #endif
 
 #ifdef LTC_SHA256
-int sha256_init(hash_state * md);
-int sha256_process(hash_state * md, const unsigned char *in, unsigned long inlen);
-int sha256_done(hash_state * md, unsigned char *hash);
+int sha256i_init(hash_state * md);
+int sha256i_process(hash_state * md, const unsigned char *in, unsigned long inlen);
+int sha256i_done(hash_state * md, unsigned char *hash);
 int sha256_test(void);
 extern const struct ltc_hash_descriptor sha256_desc;
 
@@ -239,7 +239,7 @@ extern const struct ltc_hash_descriptor sha256_desc;
    #error LTC_SHA256 is required for LTC_SHA224
 #endif
 int sha224_init(hash_state * md);
-#define sha224_process sha256_process
+#define sha224_process sha256i_process
 int sha224_done(hash_state * md, unsigned char *hash);
 int sha224_test(void);
 extern const struct ltc_hash_descriptor sha224_desc;