diff --git a/core/DataTable/Renderer/Csv.php b/core/DataTable/Renderer/Csv.php
index 2313e388aa5655211b89e998f37221cb1f1d2eed..1026e5a73ff303ccb5c97cd01f7032b88ee3bc5b 100644
--- a/core/DataTable/Renderer/Csv.php
+++ b/core/DataTable/Renderer/Csv.php
@@ -404,7 +404,7 @@ class Piwik_DataTable_Renderer_Csv extends Piwik_DataTable_Renderer
 		
 		// silent fail otherwise unit tests fail
 		@header('Content-Type: application/vnd.ms-excel');
-		@header('Content-Disposition: attachment; filename='.$fileName);
+		@header('Content-Disposition: attachment; filename="'.$fileName.'"');
 		Piwik::overrideCacheControlHeaders();
 	}