diff --git a/src/errors/errors.ts b/src/errors/errors.ts
index 229f08c84..a42b6e31d 100644
--- a/src/errors/errors.ts
+++ b/src/errors/errors.ts
@@ -39,3 +39,7 @@ export class PermissionsUpdateInconsistentError extends Error {
 export class MediaBackendError extends Error {
   name = 'MediaBackendError';
 }
+
+export class PrimaryAliasDeletionForbiddenError extends Error {
+  name = 'PrimaryAliasDeletionForbiddenError';
+}