diff --git a/ruby.c b/ruby.c
index 5bac96b5e1..6146ffeaa5 100644
--- a/ruby.c
+++ b/ruby.c
@@ -307,10 +307,10 @@ usage(const char *name, int help, int highlight, int columns)
 	  "enable or disable features. see below for available features"),
 	M("--external-encoding=encoding",           ", --internal-encoding=encoding",
 	  "specify the default external or internal character encoding"),
+	M("--backtrace-limit=num",                  "", "limit the maximum length of backtrace"),
 	M("--verbose",                              "", "turn on verbose mode and disable script from stdin"),
 	M("--version",                              "", "print the version number, then exit"),
 	M("--help",			            "", "show this message, -h for short message"),
-	M("--backtrace-limit=num",                  "", "limit the maximum length of backtrace"),
     };
     static const struct message dumps[] = {
 	M("insns",                  "", "instruction sequences"),