diff --git a/mozilla/webtools/bugzilla/.bzrrev b/mozilla/webtools/bugzilla/.bzrrev
index b5798ea1cf2..0b862609571 100644
--- a/mozilla/webtools/bugzilla/.bzrrev
+++ b/mozilla/webtools/bugzilla/.bzrrev
@@ -1 +1 @@
-8113
\ No newline at end of file
+8114
\ No newline at end of file
diff --git a/mozilla/webtools/bugzilla/Bugzilla/Mailer.pm b/mozilla/webtools/bugzilla/Bugzilla/Mailer.pm
index fc51f0d47b8..5ef7310635d 100644
--- a/mozilla/webtools/bugzilla/Bugzilla/Mailer.pm
+++ b/mozilla/webtools/bugzilla/Bugzilla/Mailer.pm
@@ -133,7 +133,11 @@ sub MessageToMTA {
         my ($part) = @_;
         return if $part->parts > 1; # Top-level
         my $content_type = $part->content_type || '';
-        if ($content_type !~ /;/) {
+        $content_type =~ /charset=['"](.+)['"]/;
+        # If no charset is defined or is the default us-ascii,
+        # then we encode the email to UTF-8 if Bugzilla has utf8 enabled.
+        # XXX - This is a hack to workaround bug 723944.
+        if (!$1 || $1 eq 'us-ascii') {
             my $body = $part->body;
             if (Bugzilla->params->{'utf8'}) {
                 $part->charset_set('UTF-8');