diff --git a/services/web/app/src/Features/Errors/Errors.js b/services/web/app/src/Features/Errors/Errors.js
index 521143ebd1..a047a8a731 100644
--- a/services/web/app/src/Features/Errors/Errors.js
+++ b/services/web/app/src/Features/Errors/Errors.js
@@ -95,6 +95,7 @@ class SAMLAuthenticationError extends OError {
     return 'saml_auth_error'
   }
 }
+class SAMLAssertionAudienceMismatch extends SAMLAuthenticationError {}
 
 class SAMLAuthenticationRequiredError extends SAMLAuthenticationError {
   get i18nKey() {
@@ -281,6 +282,7 @@ module.exports = {
   InvalidError,
   NotInV2Error,
   OutputFileFetchFailedError,
+  SAMLAssertionAudienceMismatch,
   SAMLAuthenticationRequiredError,
   SAMLIdentityExistsError,
   SAMLAlreadyLinkedError,