diff --git a/backend/routes/v1/auth/fediverse.go b/backend/routes/v1/auth/fediverse.go
index fe4a110..fa3ecec 100644
--- a/backend/routes/v1/auth/fediverse.go
+++ b/backend/routes/v1/auth/fediverse.go
@@ -68,7 +68,7 @@ func (s *Server) noAppFediverseURL(ctx context.Context, w http.ResponseWriter, r
 	case "iceshrimp":
 		softwareName = "firefish"
 		fallthrough
-	case "misskey", "foundkey", "calckey", "firefish":
+	case "misskey", "foundkey", "calckey", "firefish", "sharkey":
 		return s.noAppMisskeyURL(ctx, w, r, softwareName, instance)
 	case "mastodon", "pleroma", "akkoma", "pixelfed", "gotosocial":
 	case "glitchcafe", "hometown":