diff --git a/resources/lang/de_DE/options.yml b/resources/lang/de_DE/options.yml
index 18ea38c4..06222861 100644
--- a/resources/lang/de_DE/options.yml
+++ b/resources/lang/de_DE/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/el_GR/options.yml b/resources/lang/el_GR/options.yml
index 0d778d10..76c64217 100644
--- a/resources/lang/el_GR/options.yml
+++ b/resources/lang/el_GR/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/es_ES/options.yml b/resources/lang/es_ES/options.yml
index 51fa8946..2450457c 100644
--- a/resources/lang/es_ES/options.yml
+++ b/resources/lang/es_ES/options.yml
@@ -102,7 +102,7 @@ general:
     title: Regla de nombre de jugador
     official: Letras, números y guiones bajos (regla oficial de Mojang)
     cjk: Permitir Ideografías unificadas CJK
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Usar reglas personalizadas (expresión regular)
   custom_player_name_regexp:
     title: Reglas de nombre de jugador personalizadas
diff --git a/resources/lang/fr_FR/options.yml b/resources/lang/fr_FR/options.yml
index e73c5680..a59a0bca 100644
--- a/resources/lang/fr_FR/options.yml
+++ b/resources/lang/fr_FR/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/it_IT/options.yml b/resources/lang/it_IT/options.yml
index 0d778d10..76c64217 100644
--- a/resources/lang/it_IT/options.yml
+++ b/resources/lang/it_IT/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/ja_JP/options.yml b/resources/lang/ja_JP/options.yml
index 0d778d10..76c64217 100644
--- a/resources/lang/ja_JP/options.yml
+++ b/resources/lang/ja_JP/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/ko_KR/options.yml b/resources/lang/ko_KR/options.yml
index 2549dbc7..f1a57fa8 100644
--- a/resources/lang/ko_KR/options.yml
+++ b/resources/lang/ko_KR/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/nl_NL/options.yml b/resources/lang/nl_NL/options.yml
index 0d778d10..76c64217 100644
--- a/resources/lang/nl_NL/options.yml
+++ b/resources/lang/nl_NL/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/pt_PT/options.yml b/resources/lang/pt_PT/options.yml
index 0d778d10..76c64217 100644
--- a/resources/lang/pt_PT/options.yml
+++ b/resources/lang/pt_PT/options.yml
@@ -102,7 +102,7 @@ general:
     title: Player Name Rule
     official: Letters, numbers and underscores (Mojang's official rule)
     cjk: Allow CJK Unified Ideographs
-    utf8: Allow all valid UTF-8 characters
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Use custom rules (regular expression)
   custom_player_name_regexp:
     title: Custom Player Name Rules
diff --git a/resources/lang/ru_RU/options.yml b/resources/lang/ru_RU/options.yml
index 44339cf9..1a6cc764 100644
--- a/resources/lang/ru_RU/options.yml
+++ b/resources/lang/ru_RU/options.yml
@@ -102,7 +102,7 @@ general:
     title: Правило имени игрока
     official: Буквы, цифры и подчеркивание (официальное правило Mojang)
     cjk: Разрешить унифицированные идеографы CJK
-    utf8: Разрешить все допустимые символы UTF-8
+    utf8: Allow all valid UTF-8 characters (excluding whitespaces)
     custom: Использовать пользовательские правила (регулярное выражение)
   custom_player_name_regexp:
     title: Пользовательские правила имени игрока
diff --git a/resources/lang/zh_CN/options.yml b/resources/lang/zh_CN/options.yml
index 816756af..d1d6a8d0 100644
--- a/resources/lang/zh_CN/options.yml
+++ b/resources/lang/zh_CN/options.yml
@@ -102,7 +102,7 @@ general:
     title: 角色名规则
     official: 大小写字母数字下划线（Mojang 官方的用户名规则）
     cjk: 允许中文字符（中日韩统一表意文字）
-    utf8: 允许所有有效的 UTF-8 字符
+    utf8: 允许所有有效的 UTF-8 字符（不包括空格）
     custom: 自定义（使用下方设置的正则表达式）
   custom_player_name_regexp:
     title: 自定义角色名规则
diff --git a/resources/lang/zh_TW/options.yml b/resources/lang/zh_TW/options.yml
index 93cbe43e..19dc2bc8 100644
--- a/resources/lang/zh_TW/options.yml
+++ b/resources/lang/zh_TW/options.yml
@@ -102,7 +102,7 @@ general:
     title: 角色名規則
     official: 字元、數字和下劃綫（Mojang 官方角色名規則）
     cjk: 允許中日韓統一表意字元
-    utf8: 允許所有有效 UTF-8 字元
+    utf8: 允許所有有效的 UTF-8 字元（不包括空白）
     custom: 使用自訂規則（正則表達式）
   custom_player_name_regexp:
     title: 自訂角色名規則