diff --git a/apps/mobile/src/modules/settings/profile-validation.test.ts b/apps/mobile/src/modules/settings/profile-validation.test.ts
index 372f15f7f..1cf1adc37 100644
--- a/apps/mobile/src/modules/settings/profile-validation.test.ts
+++ b/apps/mobile/src/modules/settings/profile-validation.test.ts
@@ -5,7 +5,7 @@ import enCommon from "../../../../../locales/common/en.json"
 import enSettings from "../../../../../locales/settings/en.json"
 import { getProfileFieldError, getServerProfileFieldError } from "./profile-validation"
 
-const INVALID_HANDLE = "Use only letters, numbers and underscores."
+const INVALID_HANDLE = "Don't use spaces or invisible characters."
 
 describe("getProfileFieldError", () => {
   beforeAll(async () => {
diff --git a/apps/mobile/src/modules/settings/profile-validation.ts b/apps/mobile/src/modules/settings/profile-validation.ts
index 79f3b098c..682853be7 100644
--- a/apps/mobile/src/modules/settings/profile-validation.ts
+++ b/apps/mobile/src/modules/settings/profile-validation.ts
@@ -24,7 +24,9 @@ const countCharacters = (value: string) => Array.from(value).length
 const tooLongMessage = (field: ProfileTextField) =>
   t("validation.too_long", { ns: "common", count: MAX_LENGTH[field] })
 
-const invalidHandleMessage = () => t("profile.handle.invalid", { ns: "settings" })
+// Says what is refused. Desktop's message asks for letters, numbers and underscores only, which
+// its stricter check requires but this one, like the server, does not
+const invalidHandleMessage = () => t("profile.handle.invalid_characters", { ns: "settings" })
 
 /**
  * Why the server would refuse a profile field's value, as a translated message. The name and the
diff --git a/locales/settings/en.json b/locales/settings/en.json
index ac7878392..e5e1023fa 100644
--- a/locales/settings/en.json
+++ b/locales/settings/en.json
@@ -708,6 +708,7 @@
   "profile.email.verify_status": "Your email is {{status}}",
   "profile.handle.description": "Your unique identifier.",
   "profile.handle.invalid": "Use only letters, numbers and underscores.",
+  "profile.handle.invalid_characters": "Don't use spaces or invisible characters.",
   "profile.handle.label": "Handle",
   "profile.handle.taken": "This handle is already taken.",
   "profile.link_social.authentication": "Authentication",
diff --git a/locales/settings/fr-FR.json b/locales/settings/fr-FR.json
index 183e5a916..d3b378b12 100644
--- a/locales/settings/fr-FR.json
+++ b/locales/settings/fr-FR.json
@@ -708,6 +708,7 @@
   "profile.email.verify_status": "Votre email est {{status}}",
   "profile.handle.description": "Votre identifiant unique.",
   "profile.handle.invalid": "Utilisez uniquement des lettres, des chiffres et des tirets bas.",
+  "profile.handle.invalid_characters": "N'utilisez pas d'espaces ni de caractères invisibles.",
   "profile.handle.label": "Identifiant",
   "profile.handle.taken": "Cet identifiant est déjà pris.",
   "profile.link_social.authentication": "Authentification",
diff --git a/locales/settings/ja.json b/locales/settings/ja.json
index 0ac0e973b..6028e8380 100644
--- a/locales/settings/ja.json
+++ b/locales/settings/ja.json
@@ -708,6 +708,7 @@
   "profile.email.verify_status": "あなたのメールは{{status}}です",
   "profile.handle.description": "あなた個人の識別子です",
   "profile.handle.invalid": "英字、数字、アンダースコアのみ使用できます。",
+  "profile.handle.invalid_characters": "スペースや見えない文字は使用できません。",
   "profile.handle.label": "ハンドル",
   "profile.handle.taken": "このハンドルはすでに使われています。",
   "profile.link_social.authentication": "認証",
diff --git a/locales/settings/zh-CN.json b/locales/settings/zh-CN.json
index 6d553eb58..8360d3264 100644
--- a/locales/settings/zh-CN.json
+++ b/locales/settings/zh-CN.json
@@ -708,6 +708,7 @@
   "profile.email.verify_status": "你的邮件地址{{status}}",
   "profile.handle.description": "你的唯一标识。",
   "profile.handle.invalid": "只能使用字母、数字和下划线。",
+  "profile.handle.invalid_characters": "不能使用空格或不可见字符。",
   "profile.handle.label": "唯一标识",
   "profile.handle.taken": "该唯一标识已被占用。",
   "profile.link_social.authentication": "身份验证",
diff --git a/locales/settings/zh-TW.json b/locales/settings/zh-TW.json
index eb8d3880c..2c3be3b29 100644
--- a/locales/settings/zh-TW.json
+++ b/locales/settings/zh-TW.json
@@ -708,6 +708,7 @@
   "profile.email.verify_status": "你的電子信箱目前狀態為 {{status}}",
   "profile.handle.description": "你的獨一無二名稱。",
   "profile.handle.invalid": "只能使用字母、數字和底線。",
+  "profile.handle.invalid_characters": "不能使用空格或不可見字元。",
   "profile.handle.label": "名稱",
   "profile.handle.taken": "此名稱已被使用。",
   "profile.link_social.authentication": "驗證",