diff --git a/main.ampl b/main.ampl
index f3d95e7..1ee0fc3 100644
--- a/main.ampl
+++ b/main.ampl
@@ -3,4 +3,4 @@ model Rezept.mod;
 data Rezept.dat;
 option solver "ampl.linux64/minos";
 solve;
-display {i in ZUTATEN} menge[i]*bezugsmenge[i], total_weight, kaufpreis ;
+display {i in ZUTATEN} menge[i]*bezugsmenge[i], ref, total_weight, kaufpreis ;