diff --git a/docs/source/formatting_your_dataset.md b/docs/source/formatting_your_dataset.md
index 400f407c..f3167a3c 100644
--- a/docs/source/formatting_your_dataset.md
+++ b/docs/source/formatting_your_dataset.md
@@ -113,7 +113,7 @@ def formatter(root_path, manifest_file, **kwargs):  # pylint: disable=unused-arg
             cols = line.split("|")
             wav_file = os.path.join(root_path, "wavs", cols[0])
             text = cols[1]
-            items.append({"text":text, "audio_file":wav_file, "speaker_name":speaker_name})
+            items.append({"text":text, "audio_file":wav_file, "speaker_name":speaker_name, "root_path": root_path})
     return items
 
 # load training samples