diff --git a/resources/lib/dropbox/rest.py b/resources/lib/dropbox/rest.py
index 61b8cc6..a590d4d 100644
--- a/resources/lib/dropbox/rest.py
+++ b/resources/lib/dropbox/rest.py
@@ -412,5 +412,8 @@ def params_to_urlencoded(params):
             return o.encode('utf8')
         else:
             return str(o)
-    utf8_params = {encode(k): encode(v) for k, v in params.iteritems()}
+    utf8_params={}
+    for k, v in params.iteritems():
+        utf8_params[encode(k)]= encode(v)
+        
     return urllib.urlencode(utf8_params)