diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt b/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt
index 285082fa64..f11d1e7d22 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt
@@ -20,7 +20,7 @@ class DownloadQueue(
 
     private val updatedRelay = PublishRelay.create<Unit>()
 
-    private val downloadListeners = mutableListOf<DownloadListener>()
+    private val downloadListeners: MutableList<DownloadListener> = CopyOnWriteArrayList<DownloadListener>()
 
     private var scope = MainScope()