diff --git a/software/sys_controller/ossc/menuJAP.c b/software/sys_controller/ossc/menuJAP.c
index 6fd0386..4a8de28 100644
--- a/software/sys_controller/ossc/menuJAP.c
+++ b/software/sys_controller/ossc/menuJAP.c
@@ -59,7 +59,7 @@ static void value_disp(alt_u8 v) { sniprintf(menu_row2, LCD_ROW_LEN+1, "    %u",
 
 MENU(menu_advtiming, P99_PROTECT({ \
     { "水平サンプルレート",      OPT_AVCONFIG_NUMVAL_U16,{ .num_u16 = { &tc_h_samplerate, H_TOTAL_MIN,   H_TOTAL_MAX, vm_tweak } } },
-    { "水平synclen",         OPT_AVCONFIG_NUMVAL_U16,{ .num_u16 = { &tc_h_synclen,    H_SYNCLEN_MIN, H_SYNCLEN_MAX, vm_tweak } } },
+    { "水平同期純化",         OPT_AVCONFIG_NUMVAL_U16,{ .num_u16 = { &tc_h_synclen,    H_SYNCLEN_MIN, H_SYNCLEN_MAX, vm_tweak } } },
     { "水平アクティブ",          OPT_AVCONFIG_NUMVAL_U16,{ .num_u16 = { &tc_h_active,     H_ACTIVE_MIN,  H_ACTIVE_MAX, vm_tweak } } },
     { "垂直アクティブ",          OPT_AVCONFIG_NUMVAL_U16,{ .num_u16 = { &tc_v_active,     V_ACTIVE_MIN,  V_ACTIVE_MAX, vm_tweak } } },
     { "水平バックポーチ",       OPT_AVCONFIG_NUMVAL_U16,{ .num_u16 = { &tc_h_bporch,     H_BPORCH_MIN,  H_BPORCH_MAX, vm_tweak } } },