diff --git a/rowers/dataprep.py b/rowers/dataprep.py
index e0ac4f61..2a8597d5 100644
--- a/rowers/dataprep.py
+++ b/rowers/dataprep.py
@@ -1007,7 +1007,8 @@ def checkbreakthrough(w, r):
                         coach.user.email,
                         r.user.first_name,
                         r.user.last_name,
-                        btvalues=btvalues.to_json())
+                        btvalues=btvalues.to_json(),
+                        surname=True)
 
     return isbreakthrough, ishard