diff --git a/mercurial/verify.py b/mercurial/verify.py
--- a/mercurial/verify.py
+++ b/mercurial/verify.py
@@ -229,14 +229,14 @@ class verifier(object):
                             filenodes.setdefault(
                                 _normpath(f), {}).setdefault(fn, lr)
             except Exception as inst:
-                self.exc(lr, _("reading manifest delta %s") % short(n), inst)
+                self.exc(lr, _("reading delta %s") % short(n), inst)
         ui.progress(_('checking'), None)
 
         if self.havemf:
             for c, m in sorted([(c, m) for m in mflinkrevs
                         for c in mflinkrevs[m]]):
-                self.err(c, _("changeset refers to unknown manifest %s") %
-                         short(m))
+                self.err(c, _("changeset refers to unknown revision %s") %
+                         short(m), "manifest")
 
         return filenodes
 
diff --git a/tests/test-verify.t b/tests/test-verify.t
--- a/tests/test-verify.t
+++ b/tests/test-verify.t
@@ -171,7 +171,7 @@ Manifest log missing entry
 
   $ cp -f .hg/store-partial/00manifest.* .hg/store
   $ hg verify -q
-   1: changeset refers to unknown manifest 941fc4534185
+   manifest@1: changeset refers to unknown revision 941fc4534185
    file@1: c10f2164107d not in manifests
   2 integrity errors encountered!
   (first damaged changeset appears to be 1)
@@ -218,7 +218,7 @@ Manifest and filelog missing entry
   $ cp -f .hg/store-partial/00manifest.* .hg/store
   $ cp -f .hg/store-partial/data/file.* .hg/store/data
   $ hg verify -q
-   1: changeset refers to unknown manifest 941fc4534185
+   manifest@1: changeset refers to unknown revision 941fc4534185
   1 integrity errors encountered!
   (first damaged changeset appears to be 1)
   [1]
@@ -245,7 +245,7 @@ Corrupt manifest log base node to cause 
   $ printf abcd | dd conv=notrunc of=.hg/store/00manifest.i bs=1 seek=16 \
   >   2> /dev/null
   $ hg verify -q
-   0: reading manifest delta d0b6632564d4: * (glob)
+   manifest@0: reading delta d0b6632564d4: * (glob)
    file@0: 362fef284ce2 not in manifests
   2 integrity errors encountered!
   (first damaged changeset appears to be 0)