diff --git a/src/server/mysql.h b/src/server/mysql.h
--- a/src/server/mysql.h
+++ b/src/server/mysql.h
@@ -26,7 +26,6 @@
 
 MYSQL mysqlConnect();
 MYSQL_RES mysqlQuery(MYSQL *conn, char *query);
-MYSQL_RES mysqlQuery(MYSQL *conn, char *query);
-int mysqlFree(MYSQL_RES *res, MYSQL *conn);
+int mysqlPing(MYSQL *conn);
 
 #endif /* MYSQL_H_ */