diff --git a/F-Droid/src/org/fdroid/fdroid/RepoPersister.java b/F-Droid/src/org/fdroid/fdroid/RepoPersister.java
index e67fa35ca..c816e81a9 100644
--- a/F-Droid/src/org/fdroid/fdroid/RepoPersister.java
+++ b/F-Droid/src/org/fdroid/fdroid/RepoPersister.java
@@ -46,9 +46,9 @@ public class RepoPersister {
     @NonNull
     private final Context context;
 
-    private Map<String, App> appsToUpdate = new HashMap<>();
-    private List<Apk> apksToUpdate = new ArrayList<>();
-    private List<Repo> repos = new ArrayList<>();
+    private final Map<String, App> appsToUpdate = new HashMap<>();
+    private final List<Apk> apksToUpdate = new ArrayList<>();
+    private final List<Repo> repos = new ArrayList<>();
 
     public RepoPersister(@NonNull Context context) {
         this.context = context;
diff --git a/F-Droid/src/org/fdroid/fdroid/net/Downloader.java b/F-Droid/src/org/fdroid/fdroid/net/Downloader.java
index b7529e7e2..83c20bd1f 100644
--- a/F-Droid/src/org/fdroid/fdroid/net/Downloader.java
+++ b/F-Droid/src/org/fdroid/fdroid/net/Downloader.java
@@ -211,7 +211,7 @@ public abstract class Downloader {
      */
     private class WrappedInputStream extends InputStream {
 
-        private InputStream toWrap;
+        private final InputStream toWrap;
 
         public WrappedInputStream(InputStream toWrap) {
             super();