diff --git a/front/src/Connexion/LocalUser.ts b/front/src/Connexion/LocalUser.ts
index 56483976..0793a938 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: string): boolean {
-    const regexp = new RegExp('^[A-Za-z]{1,'+maxUserNameLength+'}$');
+    const regexp = new RegExp('^[A-Za-z0-9]{1,'+maxUserNameLength+'}$');
     return regexp.test(value);
 }
 
diff --git a/front/tests/Phaser/Connexion/LocalUserTest.ts b/front/tests/Phaser/Connexion/LocalUserTest.ts
index 00d8f400..25b54005 100644
--- a/front/tests/Phaser/Connexion/LocalUserTest.ts
+++ b/front/tests/Phaser/Connexion/LocalUserTest.ts
@@ -19,9 +19,6 @@ describe("isUserNameValid()", () => {
     it("should not validate spaces", () => {
         expect(isUserNameValid(' ')).toBe(false);
     });
-    it("should not validate numbers", () => {
-        expect(isUserNameValid('a12')).toBe(false);
-    });
     it("should not validate special characters", () => {
         expect(isUserNameValid('a&-')).toBe(false);
     });
@@ -42,4 +39,4 @@ describe("areCharacterLayersValid()", () => {
     it("should not validate empty strings", () => {
         expect(areCharacterLayersValid(['', 'male1'])).toBe(false);
     });
-});
\ No newline at end of file
+});