Include Python.h first.
diff --git a/Modules/bz2module.c b/Modules/bz2module.c
index ffd1743..f358de7 100644
--- a/Modules/bz2module.c
+++ b/Modules/bz2module.c
@@ -7,9 +7,9 @@
 
 */
 
+#include "Python.h"
 #include <stdio.h>
 #include <bzlib.h>
-#include "Python.h"
 #include "structmember.h"
 
 #ifdef WITH_THREAD