diff --git a/CHANGES b/CHANGES
index d56a27a41..d6e1c30f0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -12,6 +12,10 @@ $ pip install --user --upgrade --pre libtmux
 
 - _Insert changes/features/fixes for next release here_
 
+### Development
+
+- Fix incorrect function name `findWhere()` ({issue}`391`)
+
 ## libtmux 0.12.0 (2022-07-13)
 
 ## Compatibility
diff --git a/libtmux/test.py b/libtmux/test.py
index 03ade73e4..1dafba6af 100644
--- a/libtmux/test.py
+++ b/libtmux/test.py
@@ -265,7 +265,7 @@ def temp_window(session, *args, **kwargs):
     try:
         yield session
     finally:
-        if session.findWhere(window_id=window_id):
+        if session.find_where(window_id=window_id):
             window.kill_window()
     return