diff --git a/rowers/views/workoutviews.py b/rowers/views/workoutviews.py
index 297b338c..34fdc80e 100644
--- a/rowers/views/workoutviews.py
+++ b/rowers/views/workoutviews.py
@@ -4412,7 +4412,11 @@ def workout_upload_api(request):
     rowerform.fields.pop('email')
     try:
         fstr = request.POST['file']
-        f1 = uuid.uuid4().hex[:10]+'-'+time.strftime("%Y%m%d-%H%M%S")+os.path.splitext(fstr)[1]
+        nn, ext = os.path.splitext(fstr)
+        if ext== '.gz':
+            nn, ext2 = os.path.splitext(nn)
+            ext = ext2+ext
+        f1 = uuid.uuid4().hex[:10]+'-'+time.strftime("%Y%m%d-%H%M%S")+ext
         f2 = 'media/'+f1
         copyfile(fstr,f2)
     except KeyError: