diff --git a/scripts/stdf2excel b/scripts/stdf2excel
index 05e3e5d..85e1bcc 100644
--- a/scripts/stdf2excel
+++ b/scripts/stdf2excel
@@ -22,6 +22,7 @@
 import sys, os
 from pystdf.Importer import STDF2DataFrame
 import pystdf.V4
+import pandas as pd
 
 
 def toExcel(fname,tables):