diff -ru procmail-3.13.1.orig/src/formail.c procmail-3.13.1/src/formail.c
--- procmail-3.13.1.orig/src/formail.c	Tue Mar 30 01:05:36 1999
+++ procmail-3.13.1/src/formail.c	Fri Sep 24 12:19:52 1999
@@ -490,6 +490,7 @@
 nextarg:;
       }
 parsedoptions:
+  berkeley = ! berkeley;
   escaplen=strlen(escap);mystdout=stdout;signal(SIGPIPE,SIG_IGN);
 #ifdef SIGCHLD
   signal(SIGCHLD,SIG_DFL);