diff --git a/lib/client/load.js b/lib/client/load.js
index 7723a28e..0ba9feac 100644
--- a/lib/client/load.js
+++ b/lib/client/load.js
@@ -164,6 +164,7 @@ var Util, DOM;
                 p           = params, countProgress,
                 isObject    = Util.type.object(p.data),
                 isArray     = Util.type.array(p.data),
+                isArrayBuf  = Util.type(p.data) === 'arraybuffer',
                 type        = p.type || p.method || 'GET',
                 xhr         = new XMLHttpRequest();
             
@@ -172,7 +173,7 @@ var Util, DOM;
             if (p.responseType)
                 xhr.responseType = p.responseType;
             
-            if (isObject || isArray)
+            if (!isArrayBuf && isObject || isArray)
                 data    = Util.json.stringify(p.data);
             else
                 data    = p.data;