diff --git a/lib/nova_plugins/hypervisor-openvz b/lib/nova_plugins/hypervisor-openvz
index cce36b8..58ab5c1 100644
--- a/lib/nova_plugins/hypervisor-openvz
+++ b/lib/nova_plugins/hypervisor-openvz
@@ -17,7 +17,7 @@
 # cleanup_nova_hypervisor - remove transient data and cache
 
 # Save trace setting
-MY_XTRACE=$(set +o | grep xtrace)
+_XTRACE_OPENVZ=$(set +o | grep xtrace)
 set +o xtrace
 
 
@@ -62,7 +62,7 @@
 
 
 # Restore xtrace
-$MY_XTRACE
+$_XTRACE_OPENVZ
 
 # Local variables:
 # mode: shell-script