--- ./installman-pre	Wed Dec  3 19:15:10 2003
+++ ./installman	Wed Dec  3 19:22:20 2003
@@ -40,7 +40,7 @@ my $usage =
 
 my %opts;
 GetOptions( \%opts,
-            qw( man1dir=s man1ext=s man3dir=s man3ext=s batchlimit=i prefix=s
+            qw( man1dir=s man1ext=s man3dir=s man3ext=s batchlimit=i prefix:s
                 destdir:s notify n help silent S verbose V)) 
 	|| die $usage;
 die $usage if $opts{help};
