diff -urN a/automake.in b/automake.in
--- a/automake.in	2011-05-22 13:29:34.000000000 +0400
+++ b/automake.in	2011-05-22 13:34:27.668006842 +0400
@@ -5277,7 +5277,7 @@ sub pretty_print_internal
     # character counts for eight.  So we count the number of Tabs and
     # multiply by 7.
     my $fill_length = length ($fill);
-    $fill_length += 7 * ($fill =~ tr/\t/\t/d);
+    $fill_length += 7 * ($fill =~ tr/\t/\t/);
 
     foreach (@values)
     {