diff --git a/buildman/component/buildcomponent.py b/buildman/component/buildcomponent.py
index 77aa0d3b0..c5fe8a24a 100644
--- a/buildman/component/buildcomponent.py
+++ b/buildman/component/buildcomponent.py
@@ -194,7 +194,6 @@ class BuildComponent(BaseComponent):
         status_dict[status_completion_key] = \
           BuildComponent._total_completion(images, max(len(images), num_images))
 
-  @trollius.coroutine
   def _on_log_message(self, phase, json_data):
     """ Tails log messages and updates the build status. """
     # Update the heartbeat.
@@ -359,7 +358,6 @@ class BuildComponent(BaseComponent):
 
     self._component_status = phase
 
-  @trollius.coroutine
   def _on_heartbeat(self):
     """ Updates the last known heartbeat. """
     if self._component_status == ComponentStatus.TIMED_OUT: