diff -r defabf63e969 -r 8ff1ecfadcd1 contrib/perf.py
--- a/contrib/perf.py	Tue Oct 08 15:15:37 2019 -0700
+++ b/contrib/perf.py	Tue Oct 08 15:06:18 2019 -0700
@@ -1379,7 +1379,7 @@
                     t = repo.manifestlog._revlog.lookup(rev)
             except ValueError:
                 raise error.Abort(
-                    b'manifest revision must be integer or full ' b'node'
+                    b'manifest revision must be integer or full node'
                 )
 
     def d():