diff --git a/nova/tests/fakelibvirt.py b/nova/tests/fakelibvirt.py
index 05dce0c7..30c3e4d9 100644
--- a/nova/tests/fakelibvirt.py
+++ b/nova/tests/fakelibvirt.py
@@ -508,7 +508,7 @@ class Connection(object):
                          'test:///default']
 
         if uri not in uri_whitelist:
-            raise libvirtError("libvir: error : no connection driver "
+            raise libvirtError("libvirt error: no connection driver "
                                "available for No connection for URI %s" % uri,
                                5, 0)