diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 9f20b1f2ae..7d61ed43d1 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -767,7 +767,6 @@ function get_all_page_ids() {
 }
 
 function gzip_compression() {
-	if ( strstr($_SERVER['PHP_SELF'], 'wp-admin') ) return false;
 	if ( !get_settings('gzipcompression') ) return false;
 
 	if ( extension_loaded('zlib') ) {
diff --git a/wp-includes/js/tinymce/tiny_mce_gzip.php b/wp-includes/js/tinymce/tiny_mce_gzip.php
index e6f2aed3c2..36e1fca013 100644
--- a/wp-includes/js/tinymce/tiny_mce_gzip.php
+++ b/wp-includes/js/tinymce/tiny_mce_gzip.php
@@ -56,10 +56,7 @@
 	// General options
 	$expiresOffset = 3600 * 24 * 30; // 30 days util client cache expires
 
-	// Only gzip the contents if clients and server support it
-	$encodings = explode(',', strtolower($_SERVER['HTTP_ACCEPT_ENCODING']));
-	if (in_array('gzip', $encodings) && function_exists('ob_gzhandler'))
-		@ ob_start("ob_gzhandler"); // Don't let warnings foul up the JS
+	gzip_compression();
 
 	// Output rest of headers
 	header("Content-type: text/javascript; charset: UTF-8");