diff --git a/app/build.gradle b/app/build.gradle
index d4d080f4d..7f9b0c037 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId "com.hippo.ehviewer"
         minSdkVersion 14
         targetSdkVersion 23
-        versionCode 59
-        versionName "1.0.6"
+        versionCode 60
+        versionName "1.0.7"
         vectorDrawables.useSupportLibrary = true
         resConfigs "zh", "zh-rCN", "zh-rHK", "zh-rTW"
 
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/scene/DownloadsScene.java b/app/src/main/java/com/hippo/ehviewer/ui/scene/DownloadsScene.java
index 3a71adc95..bfce5d656 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/scene/DownloadsScene.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/scene/DownloadsScene.java
@@ -1219,12 +1219,13 @@ public class DownloadsScene extends ToolbarScene
 
     private class ThumbDataContainer implements DataContainer {
 
-        private UniFile mFile;
+        @NonNull
+        private final UniFile mFile;
 
         /**
          * @param file the thumb file
          */
-        public ThumbDataContainer(@Nullable UniFile file) {
+        public ThumbDataContainer(@NonNull UniFile file) {
             mFile = file;
         }