diff --git a/egs/commonvoice/ASR/local/preprocess_commonvoice.py b/egs/commonvoice/ASR/local/preprocess_commonvoice.py
index 4137b2dd1..d41af4015 100755
--- a/egs/commonvoice/ASR/local/preprocess_commonvoice.py
+++ b/egs/commonvoice/ASR/local/preprocess_commonvoice.py
@@ -170,7 +170,7 @@ def preprocess_commonvoice(
                 The 'validated' partition contains the data of both 'train', 'dev' 
                 and 'test' partitions. We filter out the 'dev' and 'test' partition
                 here.
-            """
+                """
             )
             dev_ids = src_dir / f"cv-{language}_dev_ids"
             test_ids = src_dir / f"cv-{language}_test_ids"
@@ -182,7 +182,9 @@ def preprocess_commonvoice(
             ), f"{test_ids} does not exist, please check stage 1 of the prepare.sh"
             dev_ids = dev_ids.read_text().strip().split("\n")
             test_ids = test_ids.read_text().strip().split("\n")
-            cut_set = cut_set.filter(lambda x: x.id not in dev_ids + test_ids)
+            cut_set = cut_set.filter(
+                lambda x: x.supervisions[0].id not in dev_ids + test_ids
+            )
 
         # Run data augmentation that needs to be done in the
         # time domain.