diff --git a/README b/README
index 287867c..6e3ac48 100644
--- a/README
+++ b/README
@@ -67,5 +67,6 @@ AUTHOR
     Tatsuhiko Miyagawa
 
 SEE ALSO
-    Plack, <http://httpd.apache.org/docs/2.2/en/mod/mod_deflate.html>
+    Plack, <http://httpd.apache.org/docs/2.2/en/mod/mod_deflate.html>,
+    <https://github.com/miyagawa/Plack-Middleware-Deflater>
 
diff --git a/lib/Plack/Middleware/Deflater.pm b/lib/Plack/Middleware/Deflater.pm
index ad37164..8c944f9 100644
--- a/lib/Plack/Middleware/Deflater.pm
+++ b/lib/Plack/Middleware/Deflater.pm
@@ -122,23 +122,7 @@ Plack::Middleware::Deflater - Compress response body with Gzip or Deflate
   use Plack::Builder;
 
   builder {
-    enable sub {
-        my $app = shift;
-        sub {
-            my $env = shift;
-            my $ua = $env->{HTTP_USER_AGENT} || '';
-            # Netscape has some problem
-            $env->{"psgix.compress-only-text/html"} = 1 if $ua =~ m!^Mozilla/4!;
-            # Netscape 4.06-4.08 have some more problems
-             $env->{"psgix.no-compress"} = 1 if $ua =~ m!^Mozilla/4\.0[678]!;
-            # MSIE (7|8) masquerades as Netscape, but it is fine
-            if ( $ua =~ m!\bMSIE (?:7|8)! ) {
-                $env->{"psgix.no-compress"} = 0;
-                $env->{"psgix.compress-only-text/html"} = 0;
-            }
-            $app->($env);
-        }
-    };
+    enable 'Deflater::Compat'; # For browser compatibility
     enable "Deflater",
         content_type => ['text/css','text/html','text/javascript','application/javascript'],
         vary_user_agent => 1;
@@ -200,6 +184,6 @@ Tatsuhiko Miyagawa
 
 =head1 SEE ALSO
 
-L<Plack>, L<http://httpd.apache.org/docs/2.2/en/mod/mod_deflate.html>
+L<Plack>, L<http://httpd.apache.org/docs/2.2/en/mod/mod_deflate.html>, L<https://github.com/miyagawa/Plack-Middleware-Deflater>
 
 =cut
diff --git a/lib/Plack/Middleware/Deflater/Compat.pm b/lib/Plack/Middleware/Deflater/Compat.pm
new file mode 100644
index 0000000..6877fca
--- /dev/null
+++ b/lib/Plack/Middleware/Deflater/Compat.pm
@@ -0,0 +1,22 @@
+package Plack::Middleware::Deflater::Compat;
+use strict;
+use parent qw(Plack::Middleware);
+use Plack::Util;
+
+sub call {
+    my($self, $env) = @_;
+
+    my $ua = $env->{HTTP_USER_AGENT} || '';
+    # Netscape has some problem
+    $env->{"psgix.compress-only-text/html"} = 1 if $ua =~ m!^Mozilla/4!;
+    # Netscape 4.06-4.08 have some more problems
+    $env->{"psgix.no-compress"} = 1 if $ua =~ m!^Mozilla/4\.0[678]!;
+    # MSIE (7|8) masquerades as Netscape, but it is fine
+    if ( $ua =~ m!\bMSIE (?:7|8)! ) {
+	$env->{"psgix.no-compress"} = 0;
+	$env->{"psgix.compress-only-text/html"} = 0;
+    }
+    return $self->app->($env);
+}
+
+1;