diff --git a/go/tests/prog/range_prog/main.go b/go/tests/prog/range_prog/main.go
index a65297e6..02053d61 100644
--- a/go/tests/prog/range_prog/main.go
+++ b/go/tests/prog/range_prog/main.go
@@ -23,7 +23,7 @@ func main() {
 		return
 	}
 	for _, i := range lib.IntRange(a, b) {
-		fmt.Print(i)
+		fmt.Print(i, " ")
 	}
 	fmt.Println()
 }