diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index a97f35a9f..c64c833f1 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -901,10 +901,10 @@
     <string name="email_error">このメールアドレスは無効です！</string>
     <string name="username_indicator">あなたのユーザー名は%1$s上に固有です</string>
     <string name="email_indicator">確認メールを送信しました</string>
-    <string name="password_indicator">Use at least 8 characters</string>
-    <string name="password_too_short">Password should contain at least 8 characters</string>
-    <string name="username_error">Username should only contain letters, numbers and underscores</string>
-    <string name="account_created">Account created!</string>
+    <string name="password_indicator">少なくとも8文字は入力してください</string>
+    <string name="password_too_short">パスワードは8文字以上必要です</string>
+    <string name="username_error">ユーザー名にはアルファベット、数字、アンダーバーのみ含めることができます</string>
+    <string name="account_created">アカウントを作成しました！</string>
     <string name="account_created_message">        Your account has been created!\n\n
         Think to validate your email within the 48 next hours.\n\n
         You can now connect your account by writing <b>%1$s</b> in the first field and click on <b>Connect</b>.\n\n