diff --git a/server/src/main/java/com/genymobile/scrcpy/CodecOption.java b/server/src/main/java/com/genymobile/scrcpy/CodecOption.java
index 12f2a889..22c45a90 100644
--- a/server/src/main/java/com/genymobile/scrcpy/CodecOption.java
+++ b/server/src/main/java/com/genymobile/scrcpy/CodecOption.java
@@ -4,8 +4,8 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class CodecOption {
-    private String key;
-    private Object value;
+    private final String key;
+    private final Object value;
 
     public CodecOption(String key, Object value) {
         this.key = key;
diff --git a/server/src/main/java/com/genymobile/scrcpy/Position.java b/server/src/main/java/com/genymobile/scrcpy/Position.java
index e9b6d8a2..2d298645 100644
--- a/server/src/main/java/com/genymobile/scrcpy/Position.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Position.java
@@ -3,8 +3,8 @@ package com.genymobile.scrcpy;
 import java.util.Objects;
 
 public class Position {
-    private Point point;
-    private Size screenSize;
+    private final Point point;
+    private final Size screenSize;
 
     public Position(Point point, Size screenSize) {
         this.point = point;