diff --git a/dice/views.py b/dice/views.py
index 3c9f9dc..bfccd81 100644
--- a/dice/views.py
+++ b/dice/views.py
@@ -31,6 +31,6 @@ def rpc_roll_dice(request):
         result_str = roller.do_roll(dice_str)
         return Response({'dice': dice_str, 'result': result_str})
     except AssertionError as aex:
-        return Response({'detail': f"Could not roll dice: {aex}"}, status=400)
+        return Response({'detail': f"Could not roll dice: {aex}", 'dice': dice_str}, status=400)
     except ValueError:
-        return Response({'detail': f"Could not parse requested dice '{dice_str}'."}, status=400)
+        return Response({'detail': f"Could not parse requested dice '{dice_str}'.", 'dice': dice_str}, status=400)