diff --git a/src/ajax.js b/src/ajax.js
index 650f3318..087f2feb 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -7,7 +7,7 @@ var r20 = /%20/g,
 	rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg, // IE leaves an \r character at EOL
 	rinput = /^(?:color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,
 	// #7653, #8125, #8152: local protocol detection
-	rlocalProtocol = /^(?:about|app|app\-storage|.+\-extension|file|widget):$/,
+	rlocalProtocol = /^(?:about|app|app\-storage|.+\-extension|file|res|widget):$/,
 	rnoContent = /^(?:GET|HEAD)$/,
 	rprotocol = /^\/\//,
 	rquery = /\?/,