diff --git a/Modules/md5c.c b/Modules/md5c.c
index e6e7898..a2b8aec 100644
--- a/Modules/md5c.c
+++ b/Modules/md5c.c
@@ -23,7 +23,7 @@
 documentation and/or software.
  */
 
-#include "config.h"
+#include "Python.h"
 #include "md5.h"
 
 /* Constants for MD5Transform routine. */