diff --git a/addons/web_diagram/controllers/main.py b/addons/web_diagram/controllers/main.py
index 2c0bcffb9d6..28f31ac0c19 100644
--- a/addons/web_diagram/controllers/main.py
+++ b/addons/web_diagram/controllers/main.py
@@ -10,7 +10,8 @@ class DiagramView(View):
         return {'fields_view': fields_view}
 
     @openerpweb.jsonrequest
-    def get_diagram_info(self, req, id, model, node, connector, src_node, des_node, **kw):
+    def get_diagram_info(self, req, id, model, node, connector,
+                         src_node, des_node, label, **kw):
 
         visible_node_fields = kw.get('visible_node_fields',[])
         invisible_node_fields = kw.get('invisible_node_fields',[])
@@ -36,8 +37,9 @@ class DiagramView(View):
                     shapes[shape_colour] = shape_color_state
 
         ir_view = req.session.model('ir.ui.view')
-        graphs = ir_view.graph_get(int(id), model, node, connector, src_node, des_node, False,
-                          (140, 180), req.session.context)
+        graphs = ir_view.graph_get(
+            int(id), model, node, connector, src_node, des_node, label,
+            (140, 180), req.session.context)
         nodes = graphs['nodes']
         transitions = graphs['transitions']
         isolate_nodes = {}
@@ -62,14 +64,15 @@ class DiagramView(View):
 
         data_connectors =connector_tr.read(connector_ids, connector_fields, req.session.context)
 
-
         for tr in data_connectors:
-            t = connectors[str(tr['id'])]
+            transition_id = str(tr['id'])
+            _sourceid, label = graphs['label'][transition_id]
+            t = connectors[transition_id]
             t.update(
                 source=tr[src_node][1],
                 destination=tr[des_node][1],
                 options={},
-                signal=tr.get('signal')
+                signal=label
             )
 
             for i, fld in enumerate(connector_fields):
diff --git a/addons/web_diagram/static/src/js/diagram.js b/addons/web_diagram/static/src/js/diagram.js
index a92eb8c2895..14eea8c669a 100644
--- a/addons/web_diagram/static/src/js/diagram.js
+++ b/addons/web_diagram/static/src/js/diagram.js
@@ -74,6 +74,7 @@ openerp.web.DiagramView = openerp.web.View.extend({
             'shape': this.nodes.attrs.shape,
             'src_node': this.connectors.attrs.source,
             'des_node': this.connectors.attrs.destination,
+            'label': this.connectors.attrs.label || false,
             'visible_nodes': [],
             'invisible_nodes': [],
             'node_fields': [],