diff --git a/code.go b/code.go
index ab19040..6923189 100644
--- a/code.go
+++ b/code.go
@@ -67,9 +67,7 @@ func HasAnySellersFromCity(sellers []Seller, city string) {
 		fmt.Println("allSellers is empty")
 	}
 
-	for i, x := range sellers {
-		allSellers[i] = x
-	}
+	copy(allSellers, sellers)
 
 	combinedSellers := []Seller{}