diff --git a/README b/README
index d28f0fd..12d31d1 100644
--- a/README
+++ b/README
@@ -4,9 +4,10 @@ PoolServer
 Cryptocurrency mining pool written in C++ for speed. Supports Stratum.
 
 Dependencies:
-  Boost Libraries (http://www.boost.org/)
+  Boost Libraries (http://www.boost.org/) (1.62! ubuntu zetty is fine)
   MySQL Library (http://www.mysql.com/)
   CMake (http://www.cmake.org/)
+  # libboost-all-dev libmysqld-dev libssl-dev libgmp-dev
 
 Building on linux:
   # cd /path/to/source
@@ -40,3 +41,7 @@ Usage:
   --MySQLDatabase arg (=poolserver) MySQL Database
   --MySQLSyncThreads arg (=2)       MySQL Sync Threads to Create
   --MySQLAsyncThreads arg (=2)      MySQL Async Threads to Create
+
+===
+P.S 
+Этот пул никогда не работал. Слова orignal'а. Настоящий пул не этот.
diff --git a/db/create.sql b/db/create.sql
index d58040a..0ee7183 100644
--- a/db/create.sql
+++ b/db/create.sql
@@ -1,7 +1,7 @@
 DROP TABLE IF EXISTS `pool_worker`;
 CREATE TABLE IF NOT EXISTS `pool_worker`
 (
-  `id` INT(255) NOT NULL AUTO_INCREMENT,
+  `account_id` INT(255) NOT NULL AUTO_INCREMENT,
   `username` VARCHAR(50) DEFAULT NULL,
   `password` VARCHAR(50) DEFAULT NULL,
   `mindiff` int(10) unsigned NOT NULL DEFAULT '1',
diff --git a/src/server/poolserver/Stratum/Client.cpp b/src/server/poolserver/Stratum/Client.cpp
index b765f67..0dc2ee9 100644
--- a/src/server/poolserver/Stratum/Client.cpp
+++ b/src/server/poolserver/Stratum/Client.cpp
@@ -303,7 +303,7 @@ namespace Stratum
         std::string username = msg["params"][0].GetString();
         std::string password = msg["params"][1].GetString();
         
-        MySQL::QueryResult result = sDatabase.Query(Util::FS("SELECT `id`, `mindiff` FROM `pool_worker` WHERE `username` = '%s' and `password` = '%s'", sDatabase.Escape(username).c_str(), sDatabase.Escape(password).c_str()).c_str());
+        MySQL::QueryResult result = sDatabase.Query(Util::FS("SELECT `account_id`, `mindiff` FROM `pool_worker` WHERE `username` = '%s' and `password` = '%s'", sDatabase.Escape(username).c_str(), sDatabase.Escape(password).c_str()).c_str());
         
         if (result) {
             _workers.insert(username);
diff --git a/src/server/shared/Gostcoin/Gostcoin.h b/src/server/shared/Gostcoin/Gostcoin.h
index 7b187e2..1cf0e4f 100644
--- a/src/server/shared/Gostcoin/Gostcoin.h
+++ b/src/server/shared/Gostcoin/Gostcoin.h
@@ -13,6 +13,7 @@ namespace Gostcoin
     inline BigInt TargetToDiff(BigInt val)
     {
         static BigInt c("0x00000000ffff0000000000000000000000000000000000000000000000000000");
+        if (val == 0) return c;
         return (c / val);
     }