diff --git a/rowers/views/importviews.py b/rowers/views/importviews.py
index 4bc73977..ae113b17 100644
--- a/rowers/views/importviews.py
+++ b/rowers/views/importviews.py
@@ -1079,7 +1079,7 @@ def strava_webhook_view(request):
                     f.write(' ')
                     f.write('Workouts already existing:\n ')
                     for w in ws:
-                        f.write('{w} \n'.format(str(w)))
+                        f.write('{w} \n'.format(w=str(w)))
         elif aspect_type == 'delete':
             try:
                 stravaid = data['object_id']