diff --git a/mercurial/httppeer.py b/mercurial/httppeer.py
--- a/mercurial/httppeer.py
+++ b/mercurial/httppeer.py
@@ -84,9 +84,10 @@ def _wraphttpresponse(resp):
             except httplib.IncompleteRead as e:
                 # e.expected is an integer if length known or None otherwise.
                 if e.expected:
+                    got = len(e.partial)
+                    total = e.expected + got
                     msg = _('HTTP request error (incomplete response; '
-                            'expected %d bytes got %d)') % (e.expected,
-                                                           len(e.partial))
+                            'expected %d bytes got %d)') % (total, got)
                 else:
                     msg = _('HTTP request error (incomplete response)')
 
diff --git a/tests/test-http-bad-server.t b/tests/test-http-bad-server.t
--- a/tests/test-http-bad-server.t
+++ b/tests/test-http-bad-server.t
@@ -275,7 +275,7 @@ Server sends an incomplete capabilities 
   $ cat hg.pid > $DAEMON_PIDS
 
   $ hg clone http://localhost:$HGPORT/ clone
-  abort: HTTP request error (incomplete response; expected 416 bytes got 20)
+  abort: HTTP request error (incomplete response; expected 436 bytes got 20)
   (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
   [255]
 
@@ -600,7 +600,7 @@ Server sends partial bundle2 header magi
 
   $ hg clone http://localhost:$HGPORT/ clone
   requesting all changes
-  abort: HTTP request error (incomplete response; expected 1 bytes got 3)
+  abort: HTTP request error (incomplete response; expected 4 bytes got 3)
   (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
   [255]
 
@@ -624,7 +624,7 @@ Server sends incomplete bundle2 stream p
 
   $ hg clone http://localhost:$HGPORT/ clone
   requesting all changes
-  abort: HTTP request error (incomplete response; expected 1 bytes got 3)
+  abort: HTTP request error (incomplete response; expected 4 bytes got 3)
   (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
   [255]
 
@@ -733,7 +733,7 @@ Server stops after bundle2 part payload 
   adding changesets
   transaction abort!
   rollback completed
-  abort: HTTP request error (incomplete response; expected 459 bytes got 7)
+  abort: HTTP request error (incomplete response; expected 466 bytes got 7)
   (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
   [255]
 
@@ -799,7 +799,7 @@ Server stops sending after 0 length payl
   added 1 changesets with 1 changes to 1 files
   transaction abort!
   rollback completed
-  abort: HTTP request error (incomplete response; expected 23 bytes got 9)
+  abort: HTTP request error (incomplete response; expected 32 bytes got 9)
   (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
   [255]