diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index f9057020fe..521a0683fc 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -505,7 +505,6 @@ def preserved_envvars_exported():
         'SHELL',
         'TERM',
         'USER',
-        'USERNAME',
     ]
 
 def preserved_envvars_exported_interactive():