@@ -8,11 +8,11 @@
 	"hash/fnv"
 	"io"
 	"os"
 )
 
-const usage = "Usage: plaindiff <file1> <file2>"
+const usage = "Usage: plaindiff <file1> <file2>\n"
 
 func main() {
 	var args []string = os.Args
 	if len(args) != 3 {
 		os.Stderr.WriteString(usage)