diff --git a/resources/content_server/mobile.css b/resources/content_server/mobile.css
index 28d12bb6db..3fd3e8bb8c 100644
--- a/resources/content_server/mobile.css
+++ b/resources/content_server/mobile.css
@@ -14,7 +14,7 @@
 
 .button a, .button:visited a {
     padding: 0.5em;
-    font-size: 1.25em;
+    font-size: larger;
     border: 1px solid black;
     text-color: black;
     text-decoration: none;
diff --git a/src/calibre/library/server/base.py b/src/calibre/library/server/base.py
index c53c1d59f6..fc18e25ff9 100644
--- a/src/calibre/library/server/base.py
+++ b/src/calibre/library/server/base.py
@@ -169,7 +169,7 @@ class LibraryServer(ContentServer, MobileServer, XMLServer, OPDSServer, Cache,
                 self.config['/'] = {
                         'tools.digest_auth.on'    : True,
                         'tools.digest_auth.realm' : (
-                            'Password to access your calibre library. Username is '
+                            'Your calibre library. Username: '
                             + opts.username.strip()),
                         'tools.digest_auth.users' : {opts.username.strip():opts.password.strip()},
                 }
diff --git a/src/calibre/library/server/mobile.py b/src/calibre/library/server/mobile.py
index a6b5c389de..eef131e89f 100644
--- a/src/calibre/library/server/mobile.py
+++ b/src/calibre/library/server/mobile.py
@@ -117,6 +117,8 @@ def build_index(books, num, search, sort, order, start, total, url_base, CKEYS,
 
         data = TD()
         for fmt in book['formats'].split(','):
+            if not fmt or fmt.lower().startswith('original_'):
+                continue
             a = quote(ascii_filename(book['authors']))
             t = quote(ascii_filename(book['title']))
             s = SPAN(