diff --git a/sway_context_manager/interface.py b/sway_context_manager/interface.py
index 3db5b62..01a7eb1 100644
--- a/sway_context_manager/interface.py
+++ b/sway_context_manager/interface.py
@@ -56,10 +56,10 @@ class ContextMngrInterface(
     async def move_container(self, user_index: int) -> bool:
         """Move the focused container to a workspace by its 1-indexed ID in its group."""
         print("Moving focused container to workspace", user_index)
-        workspace = self.workspace_tree.get_workspace(user_index)
+        workspace, _ = self.workspace_tree.get_workspace(user_index)
         if workspace is None:
             return False
-        await workspace.move_container(self.connection)
+        await workspace[0].move_container(self.connection)
         return True
 
     @dbus_method_async(input_signature="", result_signature="b")