diff --git a/cron.pl b/cron.pl
index 8ad3a7dd0632766d98228b583cd9fcb42d748481..7fda03919ae73597a969f2ee455ff4a85477fc93 100755
--- a/cron.pl
+++ b/cron.pl
@@ -19,7 +19,7 @@ else
 # copy cron.pl into weekly cron
 copy("/opt/fi-printers/cron.pl", "/etc/cron.weekly/fi_printers_cron");
 
-my @files = glob( '/etc/cups/ppd/*.ppd' );
+my @files = glob( '/etc/cups/ppd/*fi.muni.ppd' );
 
 for my $item (@files) {
 	print "current $item\n";