diff --git a/ceilometer/compute/pollsters/disk.py b/ceilometer/compute/pollsters/disk.py
index 85ef34df..4390cd56 100644
--- a/ceilometer/compute/pollsters/disk.py
+++ b/ceilometer/compute/pollsters/disk.py
@@ -706,7 +706,7 @@ class _DiskInfoPollsterBase(pollsters.BaseComputePollster):
                 # Selected inspector does not implement this pollster.
                 LOG.debug(_('%(inspector)s does not provide data for '
                             ' %(pollster)s'), (
-                          {'inspector': manager.inspector.__class__.__name__,
+                          {'inspector': self.inspector.__class__.__name__,
                            'pollster': self.__class__.__name__}))
             except Exception as err:
                 instance_name = util.instance_name(instance)