diff --git a/src/calibre/ebooks/mobi/reader.py b/src/calibre/ebooks/mobi/reader.py
index 9e29ea09b3..161a6995ba 100644
--- a/src/calibre/ebooks/mobi/reader.py
+++ b/src/calibre/ebooks/mobi/reader.py
@@ -652,7 +652,7 @@ def get_metadata(stream):
     from calibre.utils.logging import Log
     log = Log()
     
-    mi = MetaInformation(stream.name, [_('Unknown')])
+    mi = MetaInformation(os.path.basename(stream.name), [_('Unknown')])
     try:
         mh = MetadataHeader(stream, log)