diff --git a/application/controllers/config.php b/application/controllers/config.php
index a75dee706..1b83cb66e 100644
--- a/application/controllers/config.php
+++ b/application/controllers/config.php
@@ -133,13 +133,14 @@ class Config extends Secure_area
     	{
     		$this->load->dbutil();
     		$prefs = array(
-    				'format'      => 'txt',
+    				'format'      => 'zip',
     				'filename'    => 'ospos.sql'
     		);
     		 
-    		$backup = $this->dbutil->backup($prefs);
+    		$backup =& $this->dbutil->backup($prefs);
     		 
-    		$file_name =  'ospos-' . date("Y-m-d-H-i-s") .'.sql';
+			$file_name =  'ospos-' . date("Y-m-d-H-i-s") .'.zip';
+    		$save = 'uploads/'.$file_name;
     		$this->load->helper('download');
     		while (ob_get_level()) {
     			ob_end_clean();
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
index 16ee4e9cd..23ddb87fc 100644
--- a/system/helpers/download_helper.php
+++ b/system/helpers/download_helper.php
@@ -86,7 +86,6 @@ if ( ! function_exists('force_download'))
 			header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
 			header("Content-Transfer-Encoding: binary");
 			header('Pragma: public');
-			header("Content-Length: ".strlen($data));
 		}
 		else
 		{
@@ -95,7 +94,6 @@ if ( ! function_exists('force_download'))
 			header("Content-Transfer-Encoding: binary");
 			header('Expires: 0');
 			header('Pragma: no-cache');
-			header("Content-Length: ".strlen($data));
 		}
 		exit($data);
 	}