diff --git a/app/dice.py b/app/dice.py
index 26a02a5c..c4e74aa3 100644
--- a/app/dice.py
+++ b/app/dice.py
@@ -35,5 +35,5 @@ def parse_message(message):
       number_to_add = int(message.split('+')[-1])
       return roll(message.split('d')[0], message.split('d')[1].split('+')[0], number_to_add)
     except ValueError:
-      return "Could not add %s to the total roll"
+      return "Could not add that number to the total roll"
   return roll(message.split('d')[0], message.split('d')[1])