diff --git a/po/ja.po b/po/ja.po
index 6df3c16..ecbd91a 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -1064,7 +1064,7 @@ msgid ""
 "-p,--period\tperiod size in us\n"
 "-P,--nperiods\tnumber of periods\n"
 "-t,--test\tpink=use pink noise, sine=use sine wave, wav=WAV file\n"
-"-n,--nloops\tspecify number of loops to test, 0 = infinite\n"
+"-l,--nloops\tspecify number of loops to test, 0 = infinite\n"
 "-s,--speaker\tsingle speaker test. Values 1=Left, 2=right, etc\n"
 "-w,--wavfile\tUse the given WAV file as a test sound\n"
 "-W,--wavdir\tSpecify the directory containing WAV files\n"
@@ -1081,6 +1081,7 @@ msgstr ""
 "-p,--period          ピリオドサイズ (μs)\n"
 "-P,--nperiods        ピリオド数\n"
 "-t,--test            pink=ピンクノイズを使用, sine=正弦波を使用, wav=WAVファイル再生\n"
+"-l,--nloops          繰り返しテスト数, 0 = 無制限\n"
 "-s,--speaker         単一スピーカーテスト  1=左 または 2=右\n"
 "-w,--wavfile         指定のWAVファイルをテスト音源として使用\n"
 "-W,--wavdir          WAVファイルのあるディレクトリを指定\n"
diff --git a/speaker-test/speaker-test.c b/speaker-test/speaker-test.c
index 082b588..e555ac1 100644
--- a/speaker-test/speaker-test.c
+++ b/speaker-test/speaker-test.c
@@ -708,7 +708,7 @@ static void help(void)
 	   "-p,--period	period size in us\n"
 	   "-P,--nperiods	number of periods\n"
 	   "-t,--test	pink=use pink noise, sine=use sine wave, wav=WAV file\n"
-	   "-n,--nloops	specify number of loops to test, 0 = infinite\n"
+	   "-l,--nloops	specify number of loops to test, 0 = infinite\n"
 	   "-s,--speaker	single speaker test. Values 1=Left, 2=right, etc\n"
 	   "-w,--wavfile	Use the given WAV file as a test sound\n"
 	   "-W,--wavdir	Specify the directory containing WAV files\n"