diff --git a/Mac/MainWindow/Timeline/FetchRequestQueue.swift b/Mac/MainWindow/Timeline/FetchRequestQueue.swift
index 6ecb72a9f..729813f35 100644
--- a/Mac/MainWindow/Timeline/FetchRequestQueue.swift
+++ b/Mac/MainWindow/Timeline/FetchRequestQueue.swift
@@ -40,7 +40,7 @@ private extension FetchRequestQueue {
 
 		currentRequest = requestToRun
 		pendingRequests.removeFirst()
-		currentRequest.run { (fetchRequestOperation) in
+		currentRequest!.run { (fetchRequestOperation) in
 			precondition(fetchRequestOperation === self.currentRequest)
 			self.currentRequest = nil
 			self.runNextRequestIfNeeded()