diff --git a/src/autogenerated/java/net/minestom/server/entity/EntityType.java b/src/autogenerated/java/net/minestom/server/entity/EntityType.java
index 6f4728d94..2be6b74ca 100644
--- a/src/autogenerated/java/net/minestom/server/entity/EntityType.java
+++ b/src/autogenerated/java/net/minestom/server/entity/EntityType.java
@@ -340,21 +340,21 @@ public enum EntityType {
     private static final EntityType[] VALUES = values();
 
     @NotNull
-    private String namespaceID;
+    private final String namespaceID;
 
-    private double width;
+    private final double width;
 
-    private double height;
+    private final double height;
 
     @NotNull
-    private BiFunction<Entity, Metadata, EntityMeta> metaConstructor;
+    private final BiFunction<Entity, Metadata, EntityMeta> metaConstructor;
 
     @NotNull
-    private EntitySpawnType spawnType;
+    private final EntitySpawnType spawnType;
 
-    EntityType(@NotNull final String namespaceID, final double width, final double height,
-            @NotNull final BiFunction<Entity, Metadata, EntityMeta> metaConstructor,
-            @NotNull final EntitySpawnType spawnType) {
+    EntityType(@NotNull String namespaceID, double width, double height,
+            @NotNull BiFunction<Entity, Metadata, EntityMeta> metaConstructor,
+            @NotNull EntitySpawnType spawnType) {
         this.namespaceID = namespaceID;
         this.width = width;
         this.height = height;
diff --git a/src/generators/java/net/minestom/codegen/EnumGenerator.java b/src/generators/java/net/minestom/codegen/EnumGenerator.java
index 06a3b2eea..4400596f3 100644
--- a/src/generators/java/net/minestom/codegen/EnumGenerator.java
+++ b/src/generators/java/net/minestom/codegen/EnumGenerator.java
@@ -95,7 +95,7 @@ public class EnumGenerator implements CodeGenerator {
             // properties
             for (ParameterSpec property : parameters) {
                 enumClass.addField(FieldSpec.builder(property.type, property.name)
-                        .addModifiers(Modifier.PRIVATE)
+                        .addModifiers(Modifier.PRIVATE, Modifier.FINAL)
                         .addAnnotations(property.annotations)
                         .build());
             }