diff --git a/mozilla/webtools/tinderbox/doadmin.cgi b/mozilla/webtools/tinderbox/doadmin.cgi
index 4ea5b198050..6af23e7c6a8 100755
--- a/mozilla/webtools/tinderbox/doadmin.cgi
+++ b/mozilla/webtools/tinderbox/doadmin.cgi
@@ -76,9 +76,9 @@ sub trim_logs {
     # Nuke the old log files
     #
     $i = 0;
-    opendir( D, 'DogbertTip' );
+    opendir( D, "$tree" );
     while( $fn = readdir( D ) ){
-        if( $fn =~ /\.gz$/ ){
+        if( $fn =~ /\.(?:gz|brief\.html)$/ ){
             ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,
                 $ctime,$blksize,$blocks) = stat("$tree/$fn");
             if( $mtime && ($mtime < $min_date) ){