diff --git a/docs/library/btree.rst b/docs/library/btree.rst
index de52ef7e7..ba9108521 100644
--- a/docs/library/btree.rst
+++ b/docs/library/btree.rst
@@ -118,7 +118,7 @@ Methods
 .. method:: btree.__getitem__(key)
             btree.get(key, default=None, /)
             btree.__setitem__(key, val)
-            btree.__detitem__(key)
+            btree.__delitem__(key)
             btree.__contains__(key)
 
    Standard dictionary methods.