diff --git a/docs/tutorial.rst b/docs/tutorial.rst
index 9a05be5..6227893 100644
--- a/docs/tutorial.rst
+++ b/docs/tutorial.rst
@@ -168,6 +168,6 @@ A dynamic network can be also described as stream of interactions, a chronologic
 the ``stream_interactions`` method returns a generator that streams the interactions in ``g``, where ``e`` is a 4-tuple ``(u, v, op, t)``
 
  - ``u, v`` are nodes
- - ``op`` is a edge creation or deletion event (respectively ``+``, ``.``)
+ - ``op`` is a edge creation or deletion event (respectively ``+``, ``-``)
  - ``t`` is the interactions timestamp