From 85af58d5335408145379b103f4c7ea595d382840 Mon Sep 17 00:00:00 2001
From: Hagen Wierstorf <hwierstorf@audeering.com>
Date: Mon, 27 May 2024 14:19:33 +0200
Subject: [PATCH] Refine comment

---
 audb/core/dependencies.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/audb/core/dependencies.py b/audb/core/dependencies.py
index 9c8ef923..5c27139f 100644
--- a/audb/core/dependencies.py
+++ b/audb/core/dependencies.py
@@ -586,9 +586,10 @@ def _set_dtypes(df: pd.DataFrame) -> pd.DataFrame:
             with correct dtypes
 
         """
-        # Check if we have an old cache,
-        # by checking the dtype of index,
-        # which changed to `object` in version 1.7.0
+        # Check the dtype of index,
+        # to decide if we need to update dtypes,
+        # as dtype of index changed to `object`
+        # in version 1.7.0 of audb.
         if df.index.dtype != define.DEPEND_INDEX_DTYPE:
             df.index = df.index.astype(define.DEPEND_INDEX_DTYPE, copy=False)
             columns = define.DEPEND_FIELD_NAMES.values()