diff --git a/src/libsysprof-gtk/sysprof-callgraph-view-private.h b/src/libsysprof-gtk/sysprof-callgraph-view-private.h
index b33a482d..3521c094 100644
--- a/src/libsysprof-gtk/sysprof-callgraph-view-private.h
+++ b/src/libsysprof-gtk/sysprof-callgraph-view-private.h
@@ -50,6 +50,9 @@ struct _SysprofCallgraphViewClass
                         SysprofCallgraphNode *node,
                         SysprofDocumentFrame *frame,
                         gpointer              user_data);
+
+  void (*load) (SysprofCallgraphView *self,
+                SysprofCallgraph     *callgraph);
 };
 
 G_END_DECLS
diff --git a/src/libsysprof-gtk/sysprof-callgraph-view.c b/src/libsysprof-gtk/sysprof-callgraph-view.c
index f046d13c..edb5f731 100644
--- a/src/libsysprof-gtk/sysprof-callgraph-view.c
+++ b/src/libsysprof-gtk/sysprof-callgraph-view.c
@@ -214,6 +214,9 @@ sysprof_callgraph_view_reload_cb (GObject      *object,
                                         g_object_ref (GTK_SORTER (sorter)));
   model = gtk_multi_selection_new (g_object_ref (G_LIST_MODEL (sort_model)));
   gtk_column_view_set_model (self->column_view, GTK_SELECTION_MODEL (model));
+
+  if (SYSPROF_CALLGRAPH_VIEW_GET_CLASS (self)->load)
+   SYSPROF_CALLGRAPH_VIEW_GET_CLASS (self)->load (self, callgraph);
 }
 
 static gboolean