diff --git a/nova/compute/manager.py b/nova/compute/manager.py
index 3994bb4243..858be21a92 100644
--- a/nova/compute/manager.py
+++ b/nova/compute/manager.py
@@ -531,7 +531,7 @@ class ComputeManager(manager.Manager):
             # ncpu * 5 which is probably much higher than anyone would sanely
             # use for concurrently running live migrations.
             self._live_migration_executor = futures.ThreadPoolExecutor()
-        # This is a dict, keyed by migration uuid, to a two-item tuple of
+        # This is a dict, keyed by instance uuid, to a two-item tuple of
         # migration object and Future for the queued live migration.
         self._waiting_live_migrations = {}