diff --git a/addons/web_diagram/static/src/js/diagram.js b/addons/web_diagram/static/src/js/diagram.js
index 1f437fb2b81..41b3c4844db 100644
--- a/addons/web_diagram/static/src/js/diagram.js
+++ b/addons/web_diagram/static/src/js/diagram.js
@@ -193,10 +193,9 @@ openerp.web.DiagramView = openerp.web.View.extend({
         var i = 0;
         CuteNode.destruction_callback = function(cutenode){
             if(!confirm(_t("Deleting this node cannot be undone.\nIt will also delete all connected transitions.\n\nAre you sure ?"))){
-                return false; 
+                return $.Deferred().reject().promise();
             }
-            new openerp.web.DataSet(self,self.node).unlink([cutenode.id]);
-            return true;
+            return new openerp.web.DataSet(self,self.node).unlink([cutenode.id]);
         };
         CuteEdge.double_click_callback = function(cuteedge){
             self.edit_connector(cuteedge.id);
@@ -212,10 +211,9 @@ openerp.web.DiagramView = openerp.web.View.extend({
         };
         CuteEdge.destruction_callback = function(cuteedge){
             if(!confirm(_t("Deleting this transition cannot be undone.\n\nAre you sure ?"))){
-                return false; 
+                return $.Deferred().reject().promise();
             }
-            new openerp.web.DataSet(self,self.connector).unlink([cuteedge.id]);
-            return true;
+            return new openerp.web.DataSet(self,self.connector).unlink([cuteedge.id]);
         };
 
     },
diff --git a/addons/web_diagram/static/src/js/graph.js b/addons/web_diagram/static/src/js/graph.js
index d0e79b12952..b61b2bf7a6b 100644
--- a/addons/web_diagram/static/src/js/graph.js
+++ b/addons/web_diagram/static/src/js/graph.js
@@ -85,15 +85,15 @@
             dummy_circle.animate({'r': close_button_radius }, 400, 'linear');
 
             if(entity_type == "node"){
-                if(GraphNode.destruction_callback(entity)){
+                $.when(GraphNode.destruction_callback(entity)).then(function () {
                     //console.log("remove node",entity);
                     entity.remove();
-                }
+                });
             }else if(entity_type == "edge"){
-                if(GraphEdge.destruction_callback(entity)){
+                $.when(GraphEdge.destruction_callback(entity)).then(function () {
                     //console.log("remove edge",entity);
                     entity.remove();
-                }
+                });
             }
         }
         dummy_circle.click(click_action);