diff --git a/C4/Charset.pm b/C4/Charset.pm
index 655d6c70da..496033f188 100644
--- a/C4/Charset.pm
+++ b/C4/Charset.pm
@@ -255,7 +255,7 @@ sub SetMarcUnicodeFlag {
         $marc_record->leader($leader); 
     } elsif ($marc_flavour =~/UNIMARC/) {
         my $string; 
-		my ($subflength,$encodingposition)=($marc_flavour=~/AUTH/?(21,8):(36,22));
+		my ($subflength,$encodingposition)=($marc_flavour=~/AUTH/?(21,9):(36,22));
 		$string=$marc_record->subfield( 100, "a" );
         if (length($string)==$subflength) { 
 			$string = substr $string, 0,$subflength if (length($string)>$subflength);