diff --git a/parts/language/lang_ja.lua b/parts/language/lang_ja.lua
index f5406ca9..596f00d7 100644
--- a/parts/language/lang_ja.lua
+++ b/parts/language/lang_ja.lua
@@ -772,7 +772,7 @@ return{
         ['sprintPenta']=    {"スプリント",            "PENTOMINO",     "ペントミノで40ライン"},
         ['sprintMPH']=      {"スプリント",            "MPH",           "ミノ順なし\nネクストなし\nホールドなし!"},
         ['sprint123']=      {"スプリント",            "M123",          "モノミノ、ドミノ、トリミノで40ライン"},
-        ['secret_grade']=   {"裏GM                    "",              "ガイドに従ってジグザグに穴を作れ!"},
+        ['secret_grade']=   {"裏GM",                  "",              "ガイドに従ってジグザグに穴を作れ!"},
         ['dig_10l']=        {"掘り",                  "10L",           "10ライン下穴を掘れ!"},
         ['dig_40l']=        {"掘り",                  "40L",           "40ライン下穴を掘れ!"},
         ['dig_100l']=       {"掘り",                  "100L",          "100ライン下穴を掘れ!"},