diff --git a/deluge/plugins/Blocklist/deluge/plugins/blocklist/gtkui.py b/deluge/plugins/Blocklist/deluge/plugins/blocklist/gtkui.py
index 24f7060fd..b6e5d5508 100644
--- a/deluge/plugins/Blocklist/deluge/plugins/blocklist/gtkui.py
+++ b/deluge/plugins/Blocklist/deluge/plugins/blocklist/gtkui.py
@@ -213,7 +213,7 @@ class GtkUI(Gtk3PluginBase):
         self.whitelist_model = Gtk.ListStore(str, bool)
         renderer = Gtk.CellRendererText()
         renderer.connect('edited', self.on_cell_edited, self.whitelist_model)
-        renderer.set_data('ip', 0)
+        renderer.ip = 0
 
         column = Gtk.TreeViewColumn('IPs', renderer, text=0, editable=1)
         column.set_expand(True)