diff -ur proftpd-1.3.5.orig/include/log.h proftpd-1.3.5/include/log.h
--- proftpd-1.3.5.orig/include/log.h	2013-10-07 01:29:05.000000000 +0000
+++ proftpd-1.3.5/include/log.h	2014-06-02 11:06:19.649846522 +0000
@@ -33,6 +33,7 @@
 #ifndef PR_LOG_H
 #define PR_LOG_H
 
+#undef LOG_AUTHPRIV
 #ifndef LOG_AUTHPRIV
 #define LOG_AUTHPRIV LOG_AUTH
 #endif