diff --git a/mapreduce/mapreduce-python.ipynb b/mapreduce/mapreduce-python.ipynb
index 808f8e0..1676ad4 100644
--- a/mapreduce/mapreduce-python.ipynb
+++ b/mapreduce/mapreduce-python.ipynb
@@ -232,7 +232,7 @@
    },
    "outputs": [],
    "source": [
-    "!python mr-mr_s3_log_parser.py -r emr s3://bucket-source/ --output-dir=s3://bucket-dest/"
+    "!python mr_s3_log_parser.py -r emr s3://bucket-source/ --output-dir=s3://bucket-dest/"
    ]
   },
   {