--- a/config.h
+++ b/config.h
@@ -46,7 +46,7 @@
  */
 #define PRESTENV	{"IFS","ENV","PWD",0}
 
-/*#define GROUP_PER_USER			/* uncomment this if each
+#define GROUP_PER_USER			/* uncomment this if each
 						   user has his or her own
 	group and procmail can therefore trust a $HOME/.procmailrc that
 	is group writable or contained in a group writable home directory
