diff --git a/lib/server/pipe.js b/lib/server/pipe.js
index 7e4b3bdb..9add05c2 100644
--- a/lib/server/pipe.js
+++ b/lib/server/pipe.js
@@ -102,16 +102,18 @@
     function getBody(readStream, callback) {
         var body = '';
         
+        Util.checkArgs(arguments, ['readStream', 'callback']);
+        
         readStream.on('data', function(chunk) {
             body += chunk;
         });
         
         readStream.once('error', function(error) {
-            Util.exec.ret(callback, error);
+            callback(error);
         });
         
         readStream.once('end', function() {
-            Util.exec(callback, null, body);
+            callback(null, body);
         });
     }
 })();