diff --git a/WebHost.py b/WebHost.py
index fd8daeb3..db465be6 100644
--- a/WebHost.py
+++ b/WebHost.py
@@ -109,6 +109,13 @@ if __name__ == "__main__":
         logging.exception(e)
         logging.warning("Could not update LttP sprites.")
     app = get_app()
+    from worlds import AutoWorldRegister
+    # Update to only valid WebHost worlds
+    invalid_worlds = {name for name, world in AutoWorldRegister.world_types.items()
+                      if not hasattr(world.web, "tutorials")}
+    if invalid_worlds:
+        logging.error(f"Following worlds not loaded as they are invalid for WebHost: {invalid_worlds}")
+    AutoWorldRegister.world_types = {k: v for k, v in AutoWorldRegister.world_types.items() if k not in invalid_worlds}
     create_options_files()
     copy_tutorials_files_to_static()
     if app.config["SELFLAUNCH"]: