Add needed #include <ctype.h>
diff --git a/Python/getargs.c b/Python/getargs.c
index 8723423..f765a7c 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -31,6 +31,8 @@
 
 #include "allobjects.h"
 
+#include <ctype.h>
+
 
 int getargs PROTO((object *, char *, ...));
 int newgetargs PROTO((object *, char *, ...));