diff --git a/example_test.go b/example_test.go
index 6b98814..f9d9251 100644
--- a/example_test.go
+++ b/example_test.go
@@ -30,6 +30,6 @@ func TestExample(t *testing.T) {
 	// Call our plugin directly, and check the result.
 	x.ServeDNS(ctx, rec, r)
 	if a := b.String(); a != "example\n" {
-		t.Errorf("Failed to print '%s', got %s", example, a)
+		t.Errorf("Failed to print '%s', got %s", "example", a)
 	}
 }