Fix silly mistake

SpiNNakerManchester · Oct 3, 2019 · c45bb2a · c45bb2a
1 parent 79cc05e
commit c45bb2a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pacman/model/graphs/impl/graph.py b/pacman/model/graphs/impl/graph.py
@@ -114,7 +114,7 @@ def add_vertex(self, vertex):
                 raise PacmanAlreadyExistsException("vertex", vertex.label)
             vertex.set_label(vertex.label + self._label_postfix())
         vertex.addedToGraph()
-        self._vertices.add(vertex)
+        self._vertices.append(vertex)
         self._vertex_by_label[vertex.label] = vertex
 
     @overrides(AbstractGraph.add_edge)