diff --git a/tutorials/asr/ASR_with_NeMo.ipynb b/tutorials/asr/ASR_with_NeMo.ipynb
index 99489c50becd..7ce61417f3e9 100644
--- a/tutorials/asr/ASR_with_NeMo.ipynb
+++ b/tutorials/asr/ASR_with_NeMo.ipynb
@@ -161,6 +161,7 @@
                 "id": "gAhsmi6HlRzh"
             },
             "source": [
+                "import os\n",
                 "# This is where the an4/ directory will be placed.\n",
                 "# Change this if you don't want the data to be extracted in the current directory.\n",
                 "data_dir = '.'\n",