diff --git a/src/services/SyncService.js b/src/services/SyncService.js
index 73eb9343830..ae2877745e0 100644
--- a/src/services/SyncService.js
+++ b/src/services/SyncService.js
@@ -249,7 +249,7 @@ class SyncService {
 	}
 
 	async close() {
-		this.backend.disconnect()
+		this.backend?.disconnect()
 		const timeout = new Promise((resolve) => setTimeout(resolve, 2000))
 		await Promise.any([timeout, this.save()])
 		return this._close()