diff --git a/unstack.sh b/unstack.sh
index 8eded83..c4dfdc8 100755
--- a/unstack.sh
+++ b/unstack.sh
@@ -84,7 +84,7 @@
 load_plugin_settings
 
 # Determine what system we are running on.  This provides ``os_VENDOR``,
-# ``os_RELEASE``, ``os_UPDATE``, ``os_PACKAGE``, ``os_CODENAME``
+# ``os_RELEASE``, ``os_PACKAGE``, ``os_CODENAME``
 GetOSVersion
 
 # Run extras