diff --git a/couchpotato/core/plugins/trailer/__init__.py b/couchpotato/core/plugins/trailer/__init__.py
index e4c51bd1..d8496b30 100644
--- a/couchpotato/core/plugins/trailer/__init__.py
+++ b/couchpotato/core/plugins/trailer/__init__.py
@@ -29,7 +29,7 @@ config = [{
                     'label': 'Naming',
                     'default': '<filename>-trailer',
                     'advanced': True,
-                    'description': 'Use <filename> to use above settings.'
+                    'description': 'Use <strong>&lt;filename&gt;</strong> to use above settings.'
                 },
             ],
         },
diff --git a/couchpotato/core/plugins/trailer/main.py b/couchpotato/core/plugins/trailer/main.py
index 4ab51e78..1a8955fb 100644
--- a/couchpotato/core/plugins/trailer/main.py
+++ b/couchpotato/core/plugins/trailer/main.py
@@ -22,10 +22,15 @@ class Trailer(Plugin):
             return False
 
         for trailer in trailers.get(self.conf('quality'), []):
-            filename = self.conf('name').replace('<filename>', group['filename']) + ('.%s' % getExt(trailer))
+
+            ext = getExt(trailer)
+            filename = self.conf('name').replace('<filename>', group['filename']) + ('.%s' % ('mp4' if len(ext) > 5 else ext))
             destination = os.path.join(group['destination_dir'], filename)
             if not os.path.isfile(destination):
-                fireEvent('file.download', url = trailer, dest = destination, urlopen_kwargs = {'headers': {'User-Agent': 'Quicktime'}}, single = True)
+                trailer_file = fireEvent('file.download', url = trailer, dest = destination, urlopen_kwargs = {'headers': {'User-Agent': 'Quicktime'}}, single = True)
+                if os.path.getsize(trailer_file) < (1024 * 1024): # Don't trust small trailers (1MB), try next one
+                    os.unlink(trailer_file)
+                    continue
             else:
                 log.debug('Trailer already exists: %s', destination)