diff --git a/include/user.h b/include/user.h
index 60beeb6..ee6fe37 100644
--- a/include/user.h
+++ b/include/user.h
@@ -6,16 +6,16 @@
 struct User
 {
     uint32_t balance = 0;
-    uint64_t password;
+    XXH64_hash_t password;
 #if MAX_LOG_SIZE > 0
     Log log;
 #endif
 
     User(std::string &&init_pass) noexcept;
     User(uint32_t init_bal, std::string &&init_pass) noexcept;
-    User(uint32_t init_bal, uint64_t init_pass) noexcept;
+    User(uint32_t init_bal, XXH64_hash_t init_pass) noexcept;
 #if MAX_LOG_SIZE > 0
-    User(uint32_t init_bal, uint64_t init_pass, const Json::Value &log_j) noexcept;
+    User(uint32_t init_bal, XXH64_hash_t init_pass, const Json::Value &log_j) noexcept;
 #endif
 
     Json::Value Serialize() const; //to be removed later
diff --git a/include/xxhash_str.h b/include/xxhash_str.h
index ee28675..61ec6bc 100644
--- a/include/xxhash_str.h
+++ b/include/xxhash_str.h
@@ -4,5 +4,5 @@
 
 struct xxHashStringGen
 {
-    uint64_t operator()(const std::string &str) const noexcept;
+    XXH64_hash_t operator()(const std::string &str) const noexcept;
 };
diff --git a/src/user.cpp b/src/user.cpp
index 0d0db1e..eff1b73 100644
--- a/src/user.cpp
+++ b/src/user.cpp
@@ -21,9 +21,9 @@ User::User(uint32_t init_bal, std::string &&init_pass) noexcept : balance(init_b
      * @param init_bal 
      * @param init_pass 
      */
-User::User(uint32_t init_bal, uint64_t init_pass) noexcept : balance(init_bal), password(init_pass) {}
+User::User(uint32_t init_bal, XXH64_hash_t init_pass) noexcept : balance(init_bal), password(init_pass) {}
 #if MAX_LOG_SIZE > 0
-User::User(uint32_t init_bal, uint64_t init_pass, const Json::Value &log_j) noexcept : balance(init_bal), password(init_pass)
+User::User(uint32_t init_bal, XXH64_hash_t init_pass, const Json::Value &log_j) noexcept : balance(init_bal), password(init_pass)
 {
     if (log_j.size())
     {
diff --git a/src/xxhash_str.cpp b/src/xxhash_str.cpp
index 5122082..c3670bb 100644
--- a/src/xxhash_str.cpp
+++ b/src/xxhash_str.cpp
@@ -1,6 +1,6 @@
 #include "xxhash_str.h"
 
-uint64_t xxHashStringGen::operator()(const std::string &str) const noexcept
+XXH64_hash_t xxHashStringGen::operator()(const std::string &str) const noexcept
 {
     return XXH3_64bits(str.data(), str.size());
 }