diff --git a/evennia/contrib/tutorial_world/mob.py b/evennia/contrib/tutorial_world/mob.py
index 2e331cb1f..acdb2f8be 100644
--- a/evennia/contrib/tutorial_world/mob.py
+++ b/evennia/contrib/tutorial_world/mob.py
@@ -181,13 +181,17 @@ class Mob(tut_objects.TutorialObject):
         """
         idstring = "tutorial_mob" # this doesn't change
         last_interval = self.db.last_ticker_interval
-        if last_interval:
+        last_hook_key = self.db.last_hook_key
+        if last_interval and last_hook_key:
              # we have a previous subscription, kill this first.
-            TICKER_HANDLER.remove(self, last_interval, idstring)
+            TICKER_HANDLER.remove(interval=last_interval,
+                    callback=getattr(self, last_hook_key), idstring=idstring)
         self.db.last_ticker_interval = interval
+        self.db.last_hook_key = hook_key
         if not stop:
             # set the new ticker
-            TICKER_HANDLER.add(self, interval, idstring, hook_key)
+            TICKER_HANDLER.add(interval=interval,
+                    callback=getattr(self, hook_key), idstring=idstring)
 
     def _find_target(self, location):
         """
diff --git a/evennia/contrib/tutorial_world/rooms.py b/evennia/contrib/tutorial_world/rooms.py
index 953dd5392..6a54b832e 100644
--- a/evennia/contrib/tutorial_world/rooms.py
+++ b/evennia/contrib/tutorial_world/rooms.py
@@ -310,7 +310,7 @@ class WeatherRoom(TutorialRoom):
         # "update_weather" on this object. The interval is randomized
         # so as to not have all weather rooms update at the same time.
         interval = random.randint(50, 70)
-        TICKER_HANDLER.add(self, interval, idstring="tutorial", hook_key="update_weather")
+        TICKER_HANDLER.add(interval=interval, callback=self.update_weather, idstring="tutorial")
         # this is parsed by the 'tutorial' command on TutorialRooms.
         self.db.tutorial_info = \
             "This room has a Script running that has it echo a weather-related message at irregular intervals."
diff --git a/evennia/scripts/tickerhandler.py b/evennia/scripts/tickerhandler.py
index 2ad2205b2..c078660c4 100644
--- a/evennia/scripts/tickerhandler.py
+++ b/evennia/scripts/tickerhandler.py
@@ -435,6 +435,10 @@ class TickerHandler(object):
             when wanting to modify/remove the ticker later.
 
         """
+        if isinstance(callback, int):
+            raise RuntimeError("TICKER_HANDLER.add has changed: "
+            "the interval is now the first argument, callback the second.")
+
         obj, path, callfunc = self._get_callback(callback)
         store_key = self._store_key(obj, path, interval, callfunc, idstring, persistent)
         self.ticker_storage[store_key] = (args, kwargs)
@@ -455,6 +459,10 @@ class TickerHandler(object):
             idstring (str, optional): Identifier id of ticker to remove.
 
         """
+        if isinstance(callback, int):
+            raise RuntimeError("TICKER_HANDLER.remove has changed: "
+            "the interval is now the first argument, callback the second.")
+
         obj, path, callfunc = self._get_callback(callback)
         store_key = self._store_key(obj, path, interval, callfunc, idstring, persistent)
         to_remove = self.ticker_storage.pop(store_key, None)