1 files changed, 2 insertions, 1 deletions
diff --git a/netlib/odict.py b/netlib/odict.py
index 46b74e8e..0640c25d 100644
--- a/netlib/odict.py
+++ b/netlib/odict.py
@@ -60,7 +60,8 @@ class ODict:
             key, they are cleared.
         """
         if isinstance(valuelist, basestring):
-            raise ValueError("ODict valuelist should be lists.")
+            raise ValueError("Expected list instead of string. E.g. odict['elem'] = ['string1', 'string2']")
+
         new = self._filter_lst(k, self.lst)
         for i in valuelist:
             new.append([k, i])