diff --git a/doc/stub/pyotr.py b/doc/stub/pyotr.py
new file mode 100644
index 00000000..0a9d2719
--- /dev/null
+++ b/doc/stub/pyotr.py
@@ -0,0 +1,6 @@
+class OTR(object):
+    pass
+
+MSG_STATE_PLAINTEXT = 1
+MSG_STATE_ENCRYPTED = 2
+MSG_STATE_FINISHED = 3