diff --git a/packages/backend/src/server/api/mastodon/endpoints/instance.ts b/packages/backend/src/server/api/mastodon/endpoints/instance.ts
index 866a3acd44..7ed8d52313 100644
--- a/packages/backend/src/server/api/mastodon/endpoints/instance.ts
+++ b/packages/backend/src/server/api/mastodon/endpoints/instance.ts
@@ -50,7 +50,7 @@ export class ApiInstanceMastodon {
 			const roles = await this.roleService.getUserPolicies(me?.id ?? null);
 
 			const response: MastodonEntity.Instance = {
-				uri: this.config.url.replace(/^https?:\/\//, ''),
+				uri: this.config.url.replace(/^(https?:|)\/\//, ''),
 				title: this.meta.name || 'Sharkey',
 				description: this.meta.description || 'This is a vanilla Sharkey Instance. It doesn\'t seem to have a description.',
 				email: instance.email || '',