diff --git a/frontends/src/jp/base.py b/frontends/src/jp/base.py
index 4f05da90..aa7f3907 100644
--- a/frontends/src/jp/base.py
+++ b/frontends/src/jp/base.py
@@ -727,9 +727,9 @@ class CommandBase(object):
             if show_progress:
                 self.host.watch_progress = True
             # we need to register the following signal even if we don't display the progress bar
-            self.host.bridge.register("progressStarted", self.progressStartedHandler)
-            self.host.bridge.register("progressFinished", self.progressFinishedHandler)
-            self.host.bridge.register("progressError", self.progressErrorHandler)
+            self.host.bridge.register_signal("progressStarted", self.progressStartedHandler)
+            self.host.bridge.register_signal("progressFinished", self.progressFinishedHandler)
+            self.host.bridge.register_signal("progressError", self.progressErrorHandler)
 
         if self.need_connect is not None:
              self.host.connect_profile(self.connected)