diff --git a/preamble_size.py b/preamble_size.py
index 5bd38fa3..47fc442a 100644
--- a/preamble_size.py
+++ b/preamble_size.py
@@ -6,6 +6,7 @@ contexts.
 import inspect
 import zlib
 
+import mitogen.fakessh
 import mitogen.master
 import mitogen.ssh
 import mitogen.sudo
@@ -27,6 +28,7 @@ for mod in (
         mitogen.master,
         mitogen.ssh,
         mitogen.sudo,
+        mitogen.fakessh,
         ):
     sz = len(zlib.compress(mitogen.master.minimize_source(inspect.getsource(mod))))
     print '%s size: %s (%.2fKiB)' % (mod.__name__, sz, sz / 1024.0)