diff --git a/oml/item/scan.py b/oml/item/scan.py
index ec6ccf4..9c87589 100644
--- a/oml/item/scan.py
+++ b/oml/item/scan.py
@@ -88,7 +88,7 @@ def run_scan():
             if f.startswith('.'):
                 continue
             f = os.path.join(root, f)
-            ext = f.split('.')[-1]
+            ext = f.split('.')[-1].lower()
             if ext == 'kepub':
                 ext = 'epub'
             if ext in extensions:
@@ -166,7 +166,7 @@ def run_import(options=None):
             if f.startswith('.'):
                 continue
             f = os.path.join(root, f)
-            ext = f.split('.')[-1]
+            ext = f.split('.')[-1].lower()
             if ext in extensions:
                 books.append(f)
                 count += 1
diff --git a/oml/media/__init__.py b/oml/media/__init__.py
index 32a92a8..266bc3c 100644
--- a/oml/media/__init__.py
+++ b/oml/media/__init__.py
@@ -28,7 +28,7 @@ def get_id(f=None, data=None):
         return base64.b32encode(codecs.decode(ox.sha1sum(f, cached=True), 'hex')).decode()
 
 def metadata(f, from_=None):
-    ext = f.split('.')[-1]
+    ext = f.split('.')[-1].lower()
     data = {}
     data['extension'] = ext
     data['size'] = os.stat(f).st_size