diff --git a/tests/go/solutions/rot14prog/test_rot14prog.go b/tests/go/solutions/rot14prog/test_rot14prog.go
index 6fa30f95..1b4ff38d 100644
--- a/tests/go/solutions/rot14prog/test_rot14prog.go
+++ b/tests/go/solutions/rot14prog/test_rot14prog.go
@@ -19,7 +19,7 @@ func main() {
 
 	for _, arg := range table {
 		for _, s := range arg.data {
-			z01.ChallengeMain("rot14prog", "" + s + "")
+			z01.ChallengeMain("rot14prog", s)
 		}
 	}
 	z01.ChallengeMain("rot14prog", "", "something", "something1")