diff --git a/src/sdk.ts b/src/sdk.ts
index 2fdf088..8b19378 100644
--- a/src/sdk.ts
+++ b/src/sdk.ts
@@ -640,11 +640,11 @@ export class SDK {
     return this.urlSDK.getSignInUrl(redirectUri)
   }
 
-  public getUserProfileUrl(userName: string, accessToken: string) {
+  public getUserProfileUrl(userName: string, accessToken?: string) {
     return this.urlSDK.getUserProfileUrl(userName, accessToken)
   }
 
-  public getMyProfileUrl(accessToken: string) {
+  public getMyProfileUrl(accessToken?: string) {
     return this.urlSDK.getMyProfileUrl(accessToken)
   }
 }
diff --git a/src/url.ts b/src/url.ts
index 97dc811..af8368b 100644
--- a/src/url.ts
+++ b/src/url.ts
@@ -35,7 +35,7 @@ export class UrlSDK {
 
   public getSignUpUrl(enablePassword: boolean, redirectUri: string): string {
     if (enablePassword) {
-      return `${this.config.endpoint}/signup/${this.config.appName}}`
+      return `${this.config.endpoint}/signup/${this.config.appName}`
     } else {
       return this.getSignUrl('signup', redirectUri)
     }