diff --git a/modules/radiofrance/browser.py b/modules/radiofrance/browser.py
index fdd209540db90bc028c44a9964bc5a7ee51e0782..a3f766382ac4f20cae998acd4853058f8acb4a0f 100644
--- a/modules/radiofrance/browser.py
+++ b/modules/radiofrance/browser.py
@@ -38,6 +38,10 @@
 class RadioFranceVideo(BaseVideo):
     RADIOS = ('franceinter', 'franceculture')
 
+    def __init__(self, *args, **kwargs):
+        BaseVideo.__init__(self, *args, **kwargs)
+        self.ext = 'mp3'
+
     @classmethod
     def id2url(cls, _id):
         radio_id, replay_id = _id.split('-', 2)