diff --git a/mercurial/repair.py b/mercurial/repair.py
--- a/mercurial/repair.py
+++ b/mercurial/repair.py
@@ -231,8 +231,10 @@ def strip(ui, repo, nodelist, backup=Tru
             ui.warn(_("strip failed, full bundle stored in '%s'\n")
                     % vfs.join(backupfile))
         if chgrpfile:
-            ui.warn(_("strip failed, partial bundle stored in '%s'\n")
+            ui.warn(_("strip failed, unrecovered changes stored in '%s'\n")
                     % vfs.join(chgrpfile))
+            ui.warn(_("(fix the problem, then recover the changesets with "
+                      "\"hg unbundle '%s'\")\n") % vfs.join(chgrpfile))
         raise
     else:
         if chgrpfile:
diff --git a/tests/test-strip.t b/tests/test-strip.t
--- a/tests/test-strip.t
+++ b/tests/test-strip.t
@@ -375,7 +375,8 @@ Failed hook while applying "saveheads" b
   transaction abort!
   rollback completed
   strip failed, full bundle stored in '$TESTTMP/test/.hg/strip-backup/*-backup.hg' (glob)
-  strip failed, partial bundle stored in '$TESTTMP/test/.hg/strip-backup/*-temp.hg' (glob)
+  strip failed, unrecovered changes stored in '$TESTTMP/test/.hg/strip-backup/*-temp.hg' (glob)
+  (fix the problem, then recover the changesets with "hg unbundle '$TESTTMP/test/.hg/strip-backup/*-temp.hg'") (glob)
   abort: pretxnchangegroup.bad hook exited with status 1
   [255]
   $ restore