diff --git a/_content/tour/methods/exercise-errors.go b/_content/tour/methods/exercise-errors.go
index 22e933b2f4..b516f6d49e 100644
--- a/_content/tour/methods/exercise-errors.go
+++ b/_content/tour/methods/exercise-errors.go
@@ -11,6 +11,11 @@ func Sqrt(x float64) (float64, error) {
 }
 
 func main() {
-	fmt.Println(Sqrt(2))
-	fmt.Println(Sqrt(-2))
+	for _, number := range []float64{2, -2} {
+		if root, err := Sqrt(number); err == nil {
+			fmt.Println(root)
+		} else {
+			fmt.Println(err)
+		}
+	}
 }
diff --git a/_content/tour/solutions/errors.go b/_content/tour/solutions/errors.go
index e8de49e5e6..bfa5b87fbc 100644
--- a/_content/tour/solutions/errors.go
+++ b/_content/tour/solutions/errors.go
@@ -35,6 +35,11 @@ func Sqrt(f float64) (float64, error) {
 }
 
 func main() {
-	fmt.Println(Sqrt(2))
-	fmt.Println(Sqrt(-2))
+	for _, number := range []float64{2, -2} {
+		if root, err := Sqrt(number); err == nil {
+			fmt.Println(root)
+		} else {
+			fmt.Println(err)
+		}
+	}
 }