diff --git a/CMakeLists.txt b/CMakeLists.txt
index 91c3a804eea..9f53a9fb146 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
-CMAKE_MINIMUM_REQUIRED(VERSION 2.4.7 FATAL_ERROR)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6 FATAL_ERROR)
 
 PROJECT(MySql)
 
diff --git a/include/config-win.h b/include/config-win.h
index ab463a7c142..05bdfd2c226 100644
--- a/include/config-win.h
+++ b/include/config-win.h
@@ -15,15 +15,6 @@
 
 /* Defines for Win32 to make it compatible for MySQL */
 
-#ifdef __WIN2000__
-/* We have to do this define before including windows.h to get the AWE API
-functions */
-#define _WIN32_WINNT     0x0500
-#else
-/* Get NT 4.0 functions */
-#define _WIN32_WINNT     0x0400
-#endif
-
 #if defined(_MSC_VER) && _MSC_VER >= 1400
 /* Avoid endless warnings about sprintf() etc. being unsafe. */
 #define _CRT_SECURE_NO_DEPRECATE 1
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index 49b7fafcc0b..cde2e8dac3e 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -41,6 +41,12 @@
 #include <myisam.h>
 #include <myisammrg.h>
 
+/* this is to get the bison compilation windows warnings out */
+#ifdef _MSC_VER
+/* warning C4065: switch statement contains 'default' but no 'case' labels */
+#pragma warning (disable : 4065)
+#endif
+
 int yylex(void *yylval, void *yythd);
 
 const LEX_STRING null_lex_str={0,0};