diff --git a/languages/ja-JP.lang.yaml b/languages/ja-JP.lang.yaml
index a7a2cbf0..ff041aa0 100644
--- a/languages/ja-JP.lang.yaml
+++ b/languages/ja-JP.lang.yaml
@@ -1,4 +1,4 @@
 ---
 name: "日本語"
-code: "ja_JP"
+code: "ja-JP"
 incomplete: true