diff --git a/nova/compute/claims.py b/nova/compute/claims.py
index fc170839ffa6..935c0f2aa275 100644
--- a/nova/compute/claims.py
+++ b/nova/compute/claims.py
@@ -159,28 +159,33 @@ class Claim(NopClaim):
         """Test if the given type of resource needed for a claim can be safely
         allocated.
         """
-        msg = _("Total %(type_)s: %(total)d %(unit)s, used: %(used)d %(unit)s")
-        LOG.audit(msg % locals(), instance=self.instance)
+        LOG.audit(_('Total %(type)s: %(total)d %(unit)s, used: %(used).02f '
+                    '%(unit)s'),
+                  {'type': type_, 'total': total, 'unit': unit, 'used': used},
+                  instance=self.instance)
 
         if limit is None:
             # treat resource as unlimited:
-            LOG.audit(_("%(type_)s limit not specified, defaulting to "
-                        "unlimited") % locals(), instance=self.instance)
+            LOG.audit(_('%(type)s limit not specified, defaulting to '
+                        'unlimited'), {'type': type_}, instance=self.instance)
             return True
 
         free = limit - used
 
         # Oversubscribed resource policy info:
-        msg = _("%(type_)s limit: %(limit)d %(unit)s, free: %(free)d "
-                "%(unit)s") % locals()
-        LOG.audit(msg, instance=self.instance)
+        LOG.audit(_('%(type)s limit: %(limit).02f %(unit)s, free: %(free).02f '
+                    '%(unit)s'),
+                  {'type': type_, 'limit': limit, 'free': free, 'unit': unit},
+                  instance=self.instance)
 
         can_claim = requested <= free
 
         if not can_claim:
-            msg = _("Unable to claim resources.  Free %(type_)s %(free)d "
-                    "%(unit)s < requested %(requested)d %(unit)s") % locals()
-            LOG.info(msg, instance=self.instance)
+            LOG.info(_('Unable to claim resources.  Free %(type)s %(free).02f '
+                       '%(unit)s < requested %(requested)d %(unit)s'),
+                     {'type': type_, 'free': free, 'unit': unit,
+                      'requested': requested},
+                     instance=self.instance)
 
         return can_claim