diff --git a/rowers/tasks.py b/rowers/tasks.py
index 1b093a48..8d849304 100644
--- a/rowers/tasks.py
+++ b/rowers/tasks.py
@@ -2825,7 +2825,10 @@ def handle_rp3_async_workout(userid,rp3token,rp3id,startdatetime,max_attempts,de
         if response.status_code != 200: # pragma: no cover
             have_link = True
 
-        workout_download_details = pd.json_normalize(response.json()['data']['download'])
+        try:
+            workout_download_details = pd.json_normalize(response.json()['data']['download'])
+        except JSONDecodeError:
+            return 0
 
         if workout_download_details.iat[0,1] == 'ready':
             download_url = workout_download_details.iat[0,2]