diff --git a/plot_waveform.ipynb b/plot_waveform.ipynb
index 219ab690f89f9b9d03500f6b799d0539a98e4e6c..a25035dfa2f541c27c839d45c56d44cb0aa4fb8a 100644
--- a/plot_waveform.ipynb
+++ b/plot_waveform.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "This is a notebook to plot waveform genreated by making-injections.  Data file is a json format."
+    "This is a notebook to plot waveform genreated by making-injections.ipynb.  Data file is a json format."
    ]
   },
   {