diff --git a/consensus/ethash_hash/blake2b.c b/consensus/ethash_hash/blake2b.c
index 73464c99..5ff2aab4 100644
--- a/consensus/ethash_hash/blake2b.c
+++ b/consensus/ethash_hash/blake2b.c
@@ -1,14 +1,10 @@
 #ifndef __BLAKE2B_C_
 #define __BLAKE2B_C_
 
-//#include <stdint.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
-typedef unsigned long long uint64_t;
-typedef unsigned char uint8_t;
-typedef unsigned int uint32_t;
-
 #include "xxenc.c"
 
 /**
@@ -239,7 +235,7 @@ static inline void blake2b(
 
 #define _VP1 829000
 
-static inline void hash_enter(uint8_t* o,const uint8_t* s,uint64_t height) {
+static inline void hash_enter(uint8_t* o,const uint8_t* s,unsigned long long height) {
     uint8_t p[16];
     if(height>=_VP1) {
         uint8_t s_enc[40]={0};
@@ -274,7 +270,7 @@ static inline void hash_enter(uint8_t* o,const uint8_t* s,uint64_t height) {
 
 }
 
-static inline void hash_leave(uint8_t* o,const uint8_t* s,uint64_t height) {
+static inline void hash_leave(uint8_t* o,const uint8_t* s,unsigned long long height) {
     uint8_t p[16];
     if(height>=_VP1) {
         uint8_t s_enc[96]={0};
diff --git a/consensus/ethash_hash/xxenc.c b/consensus/ethash_hash/xxenc.c
index aede4bcb..186eb64e 100644
--- a/consensus/ethash_hash/xxenc.c
+++ b/consensus/ethash_hash/xxenc.c
@@ -9,6 +9,7 @@ Public domain.
 #ifndef XXENC_H
 #define XXENC_H
 
+#include <stdint.h>
 #include <stdlib.h>
 
 /*