diff --git a/lib/nova b/lib/nova
index 5b6f50e..6ab2000 100644
--- a/lib/nova
+++ b/lib/nova
@@ -195,7 +195,7 @@
 
     # Set up the rootwrap sudoers for nova
     TEMPFILE=`mktemp`
-    echo "$USER ALL=(root) NOPASSWD: $ROOTWRAP_SUDOER_CMD" >$TEMPFILE
+    echo "$STACK_USER ALL=(root) NOPASSWD: $ROOTWRAP_SUDOER_CMD" >$TEMPFILE
     chmod 0440 $TEMPFILE
     sudo chown root:root $TEMPFILE
     sudo mv $TEMPFILE /etc/sudoers.d/nova-rootwrap