diff -urN ezmlm-0.53/error.h ezmlm-0.53-new/error.h
--- ezmlm-0.53/error.h     2003-04-06 07:59:49.000000000 +0200
+++ ezmlm-0.53-new/error.h  2003-04-06 08:09:25.000000000 +0200
@@ -1,5 +1,6 @@
 #ifndef ERROR_H
 #define ERROR_H
+#include <errno.h>
 
 extern int errno;