diff --git a/tools/tinderbox/bloatdiff.pl b/tools/tinderbox/bloatdiff.pl
index 99bb89bfe8ee..aa676d02c8b5 100755
--- a/tools/tinderbox/bloatdiff.pl
+++ b/tools/tinderbox/bloatdiff.pl
@@ -148,7 +148,7 @@ sub PrintSize($) {
     } elsif ($size > 1000) {
         $rv = PrintNum($size / 1000.0) . "K";
     } else {
-        $rv = PrintNum($size);
+        $rv = PrintNum($size) . "B";
     }
 }
 
diff --git a/tools/tinderbox/build-seamonkey-util.pl b/tools/tinderbox/build-seamonkey-util.pl
index 153b3ee165e5..0b24e511da9d 100644
--- a/tools/tinderbox/build-seamonkey-util.pl
+++ b/tools/tinderbox/build-seamonkey-util.pl
@@ -20,7 +20,7 @@ use File::Basename; # for basename();
 use Config; # for $Config{sig_name} and $Config{sig_num}
 
 
-$::UtilsVersion = '$Revision: 1.86 $ ';
+$::UtilsVersion = '$Revision: 1.87 $ ';
 
 package TinderUtils;
 
@@ -1568,7 +1568,7 @@ sub PrintSize($) {
     } elsif ($size > 1000) {
         $rv = PrintNum($size / 1000.0) . "K";
     } else {
-        $rv = PrintNum($size);
+        $rv = PrintNum($size) . "B";
     }
 }