diff --git a/source/tool/chipsec_util.py b/source/tool/chipsec_util.py
index d186ef0c..b0d1cd00 100644
--- a/source/tool/chipsec_util.py
+++ b/source/tool/chipsec_util.py
@@ -89,7 +89,7 @@ class ChipsecUtil:
     
     def f_mod(self, x):
         MODFILE_RE = re.compile("^\w+\.py$")
-        return ( x.find('__init__') == -1 and MODFILE_RE.match(x) )
+        return ( x.lower().find('__init__') == -1 and MODFILE_RE.match(x.lower()) )
     def map_modname(self, x):
         return x.split('.')[0]