diff --git a/nova/virt/libvirt/driver.py b/nova/virt/libvirt/driver.py
index 640ad7dff5dd..df86cb851ef7 100644
--- a/nova/virt/libvirt/driver.py
+++ b/nova/virt/libvirt/driver.py
@@ -1302,7 +1302,7 @@ class LibvirtDriver(driver.ComputeDriver):
 
             except Exception as exc:
                 LOG.exception("Failure rebasing volume %(new_path)s on "
-                    "%(new_path)s.", {'new_path': conf.source_path,
+                    "%(old_path)s.", {'new_path': conf.source_path,
                                       'old_path': disk_path})
                 raise exception.VolumeRebaseFailed(reason=six.text_type(exc))