diff --git a/delta_performer.cc b/delta_performer.cc
index 27ee556..3dbfbc0 100644
--- a/delta_performer.cc
+++ b/delta_performer.cc
@@ -883,7 +883,7 @@
   // the one whose size matches the size mentioned in Omaha response. If any
   // errors happen after this, it's likely a problem with the payload itself or
   // the state of the system and not a problem with the URL or network.  So,
-  // indicate that to the payload state so that AU can back-off appropriately.
+  // indicate that to the payload state so that AU can backoff appropriately.
   system_state_->payload_state()->DownloadComplete();
 
   return kActionCodeSuccess;