diff --git a/ocf/NovaEvacuate b/ocf/NovaEvacuate
index 319a747..f764bde 100644
--- a/ocf/NovaEvacuate
+++ b/ocf/NovaEvacuate
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 #
 # NovaCompute agent manages compute daemons.
@@ -220,7 +220,8 @@ evacuate_monitor() {
     fi
 
     handle_evacuations $(
-        attrd_updater -n evacuate -A |
+        attrd_updater -n evacuate -A \
+            2> >(grep -v "attribute does not exist" 1>&2) |
             sed 's/ value=""/ value="no"/' |
             tr '="' '  ' |
             awk '{print $4" "$6}'