diff --git a/src/sql/mysql/MySQL.cpp b/src/sql/mysql/MySQL.cpp
index eb2dad9..8837c77 100644
--- a/src/sql/mysql/MySQL.cpp
+++ b/src/sql/mysql/MySQL.cpp
@@ -7,10 +7,6 @@
 #include <memory>
 #include <utility>
 
-#define CR_CONNECTION_ERROR     (2002)
-#define CR_SERVER_GONE_ERROR    (2006)
-#define CR_SERVER_LOST          (2013)
-
 using namespace std;
 using namespace sql;
 using namespace sql::mysql;