diff --git a/types/auth0-js/index.d.ts b/types/auth0-js/index.d.ts
index ac2d32c5ac..cc36dd5a36 100644
--- a/types/auth0-js/index.d.ts
+++ b/types/auth0-js/index.d.ts
@@ -569,7 +569,9 @@ export type SpecErrorCodes =
 
 export interface Auth0Error {
     error: LibErrorCodes | SpecErrorCodes | string;
-    errorDescription: string;
+    errorDescription?: string;
+    // Auth0 is not consistent in the naming of the error description field
+    error_description?: string;
     // Need to include non-intuitive error fields that Auth0 uses
     code?: string;
     description?: string;