diff --git a/ietf/secr/proceedings/proc_utils.py b/ietf/secr/proceedings/proc_utils.py
index ad5ef03c1..eac5c17ef 100644
--- a/ietf/secr/proceedings/proc_utils.py
+++ b/ietf/secr/proceedings/proc_utils.py
@@ -45,7 +45,7 @@ def check_audio_files(group,meeting):
             continue
         room = timeslot.location.name.lower()
         room = room.replace(' ','')
-        room = room.replace('/','')
+        room = room.replace('/','_')
         time = timeslot.time.strftime("%Y%m%d-%H%M")
         filename = 'ietf{}-{}-{}-*'.format(meeting.number,room,time)
         path = os.path.join(settings.MEETING_RECORDINGS_DIR,'ietf{}'.format(meeting.number),filename)