diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/manga/MangaCoverMetadata.kt b/app/src/main/java/eu/kanade/tachiyomi/util/manga/MangaCoverMetadata.kt
index 18b5cc430c..95f6ba20e8 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/util/manga/MangaCoverMetadata.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/util/manga/MangaCoverMetadata.kt
@@ -15,8 +15,8 @@ import java.util.concurrent.ConcurrentHashMap
 object MangaCoverMetadata {
     private var coverRatioMap = ConcurrentHashMap<Long, Float>()
     private var coverColorMap = ConcurrentHashMap<Long, Pair<Int, Int>>()
-    val preferences by injectLazy<PreferencesHelper>()
-    val coverCache by injectLazy<CoverCache>()
+    private val preferences by injectLazy<PreferencesHelper>()
+    private val coverCache by injectLazy<CoverCache>()
 
     fun load() {
         val ratios = preferences.coverRatios().get()