diff --git a/src/node-curl.h b/src/node-curl.h
index 44bb9fd..ae39340 100644
--- a/src/node-curl.h
+++ b/src/node-curl.h
@@ -116,7 +116,7 @@ class NodeCurl
 		{
 			node::Buffer * buffer = node::Buffer::New(data, n);
 			v8::Handle<v8::Value> argv[] = { buffer->handle_ };
-			cb->ToObject()->CallAsFunction(handle, 1, argv);
+			n = cb->ToObject()->CallAsFunction(handle, 1, argv)->Int32Value();
 		}
 		return n;
 	}