diff --git a/doc/en/weechat_plugin_api.en.asciidoc b/doc/en/weechat_plugin_api.en.asciidoc
index a9789cb1fe1..80444f1e528 100644
--- a/doc/en/weechat_plugin_api.en.asciidoc
+++ b/doc/en/weechat_plugin_api.en.asciidoc
@@ -2218,7 +2218,7 @@ Arguments:
 * 'string': string
 * 'length': max number of UTF-8 chars to check; if ≤ 0, the whole string is
   checked _(WeeChat ≥ 1.4)_
-* 'error': if not NULL, '*error*' is set with pointer to first non valid UTF-8
+* 'error': if not NULL, '*error' is set with pointer to first non valid UTF-8
   char in string, if any
 
 Return value:
diff --git a/doc/it/weechat_plugin_api.it.asciidoc b/doc/it/weechat_plugin_api.it.asciidoc
index 3b006c07d48..6b092aad3a4 100644
--- a/doc/it/weechat_plugin_api.it.asciidoc
+++ b/doc/it/weechat_plugin_api.it.asciidoc
@@ -2298,7 +2298,7 @@ Argomenti:
 // TRANSLATION MISSING
 * 'length': max number of UTF-8 chars to check; if ≤ 0, the whole string is
   checked _(WeeChat ≥ 1.4)_
-* 'error': se non NULL, '*error*' è impostato con il puntatore al primo
+* 'error': se non NULL, '*error' è impostato con il puntatore al primo
   carattere UTF-8 non valido nella stringa, se esiste
 
 Valore restituito:
diff --git a/doc/ja/weechat_plugin_api.ja.asciidoc b/doc/ja/weechat_plugin_api.ja.asciidoc
index 49e93bbe346..1c922bc7823 100644
--- a/doc/ja/weechat_plugin_api.ja.asciidoc
+++ b/doc/ja/weechat_plugin_api.ja.asciidoc
@@ -2219,7 +2219,7 @@ int weechat_utf8_is_valid (const char *string, int length, char **error);
 * 'string': 文字列
 * 'length': 確認する UTF-8 文字の最大文字数; これを 0 以下に設定した場合、文字列中のすべての文字を確認します
   _(WeeChat バージョン 1.4 以上で利用可)_
-* 'error': NULL でない場合は '*error*'
+* 'error': NULL でない場合は '*error'
   は文字列に含まれる最初の妥当でない UTF-8 文字へのポインタ
 
 戻り値: