diff --git a/movement/validators/files.py b/movement/validators/files.py
index 17c3d00e..14bf79cc 100644
--- a/movement/validators/files.py
+++ b/movement/validators/files.py
@@ -226,7 +226,7 @@ class ValidAniposeCSV:
     """Class for validating Anipose-style 3D pose .csv files.
 
     The validator ensures that the file contains the
-    expected index column levels.
+    expected column names in its header (first row).
 
     Attributes
     ----------