diff --git a/lbrynet/extras/daemon/mime_types.py b/lbrynet/extras/daemon/mime_types.py
index e2c9667cd..844f61169 100644
--- a/lbrynet/extras/daemon/mime_types.py
+++ b/lbrynet/extras/daemon/mime_types.py
@@ -153,4 +153,5 @@ types_map = {
 
 def guess_media_type(path):
     _, ext = os.path.splitext(path)
-    return types_map.get(ext, f'application/x-ext-{ext}')
+    default = f'application/x-ext-{ext}' if ext else 'application/octet-stream'
+    return types_map.get(ext, default)