diff --git a/buildman/manager/ephemeral.py b/buildman/manager/ephemeral.py
index c7a084888..07c773a59 100644
--- a/buildman/manager/ephemeral.py
+++ b/buildman/manager/ephemeral.py
@@ -257,7 +257,7 @@ class EphemeralBuilderManager(BaseManager):
                    job.job_details['build_uuid'], build_component.builder_realm)
       yield From(build_component.start_build(job))
     except KeyError:
-      logger.warning('Builder is asking for more work, but work already completed')
+      logger.debug('Builder is asking for more work, but work already completed')
 
   def build_component_disposed(self, build_component, timed_out):
     logger.debug('Calling build_component_disposed.')