diff --git a/framework/core/js/forum/src/components/SignUpModal.js b/framework/core/js/forum/src/components/SignUpModal.js
index 3fda244da..fa96c80c0 100644
--- a/framework/core/js/forum/src/components/SignUpModal.js
+++ b/framework/core/js/forum/src/components/SignUpModal.js
@@ -60,8 +60,8 @@ export default class SignUpModal extends Modal {
     ];
   }
 
-  fieldCantBeEdited(field) {
-    return this.props.identification_fields && this.props.identification_fields.indexOf(field) !== -1;
+  isProvided(field) {
+    return this.props.identificationFields && this.props.identificationFields.indexOf(field) !== -1;
   }
 
   body() {
@@ -73,14 +73,14 @@ export default class SignUpModal extends Modal {
           <input className="FormControl" name="username" type="text" placeholder={extractText(app.translator.trans('core.forum.sign_up.username_placeholder'))}
             value={this.username()}
             onchange={m.withAttr('value', this.username)}
-            disabled={this.loading || this.fieldCantBeEdited('username')} />
+            disabled={this.loading || this.isProvided('username')} />
         </div>
 
         <div className="Form-group">
           <input className="FormControl" name="email" type="email" placeholder={extractText(app.translator.trans('core.forum.sign_up.email_placeholder'))}
             value={this.email()}
             onchange={m.withAttr('value', this.email)}
-            disabled={this.loading || this.fieldCantBeEdited('email')} />
+            disabled={this.loading || this.isProvided('email')} />
         </div>
 
         {this.props.token ? '' : (
diff --git a/framework/core/src/Forum/AuthenticationResponseFactory.php b/framework/core/src/Forum/AuthenticationResponseFactory.php
index fbd82c42e..6a17c8c2d 100644
--- a/framework/core/src/Forum/AuthenticationResponseFactory.php
+++ b/framework/core/src/Forum/AuthenticationResponseFactory.php
@@ -109,8 +109,7 @@ class AuthenticationResponseFactory
                 $suggestions,
                 ['token' => $token->id],
                 // List of the fields that can't be edited during sign up
-                // Only includes attributes on the sign up form, otherwise this could leak private attribute names
-                ['identification_fields' => array_keys(array_only($identification, ['username', 'email']))]
+                ['identificationFields' => array_keys($identification)]
             );
         }