diff --git a/front/src/Connexion/LocalUser.ts b/front/src/Connexion/LocalUser.ts
index c877d119..d240a90e 100644
--- a/front/src/Connexion/LocalUser.ts
+++ b/front/src/Connexion/LocalUser.ts
@@ -10,7 +10,7 @@ export interface CharacterTexture {
 export const maxUserNameLength: number = MAX_USERNAME_LENGTH;
 
 export function isUserNameValid(value: unknown): boolean {
-    return typeof value === "string" && value.length > 0 && value.length <= maxUserNameLength && value.indexOf(' ') === -1;
+    return typeof value === "string" && value.length > 0 && value.length <= maxUserNameLength && /\S/.test(value);
 }
 
 export function areCharacterLayersValid(value: string[] | null): boolean {