diff --git a/errors.php b/errors.php
index 405da09cc..f7333fd1a 100644
--- a/errors.php
+++ b/errors.php
@@ -35,7 +35,7 @@
 	$ERRORS[12] = __("SQL escaping test failed, check your database and PHP configuration");
 
 	if ($_REQUEST['mode'] == 'js') {
-		header("Content-Type: text/plain; charset=UTF-8");
+		header("Content-Type: text/javascript; charset=UTF-8");
 
 		print "var ERRORS = [];\n";