diff --git a/bidict/_mut.py b/bidict/_mut.py
index 49d4874..14fe977 100644
--- a/bidict/_mut.py
+++ b/bidict/_mut.py
@@ -26,7 +26,7 @@
 #==============================================================================
 
 
-"""Provide :class:`bidict`."""
+"""Provide :class:`MutableBidict`."""
 
 import typing as _t