diff --git a/_mysql.c b/_mysql.c
index 8a515511..b0b8fdeb 100644
--- a/_mysql.c
+++ b/_mysql.c
@@ -26,17 +26,9 @@ OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 PERFORMANCE OF THIS SOFTWARE.
 */
 
-#include "my_config.h"
 #include "mysql.h"
 #include "mysqld_error.h"
 
-#ifdef HAVE_WCSCOLL
-#undef HAVE_WCSCOLL
-#endif
-#ifdef SIZEOF_SIZE_T
-#undef SIZEOF_SIZE_T
-#endif
-
 #include "Python.h"
 #if PY_MAJOR_VERSION >= 3
 #define IS_PY3K