diff --git a/mozilla/webtools/tinderbox/warnings.pl b/mozilla/webtools/tinderbox/warnings.pl
index f222e9fe8b8..89a51fdf152 100755
--- a/mozilla/webtools/tinderbox/warnings.pl
+++ b/mozilla/webtools/tinderbox/warnings.pl
@@ -79,7 +79,7 @@ sub usage {
 }
 
 # This is for gunzip (should add a configure script to handle this).
-$ENV{PATH} .= ":/usr/local/bin";
+$ENV{PATH} .= "/bin:/usr/local/bin";
 
 $debug = 1, shift @ARGV if $ARGV[0] eq '--debug';