diff --git a/PlayWallCore/src/main/java/de/tobias/playpad/project/Project.java b/PlayWallCore/src/main/java/de/tobias/playpad/project/Project.java
index 981690171f9f40562c1f650c90c6c920733286be..bd70c1dfa78b1a6c1b50f3216ef46d1fdc0fb8b2 100644
--- a/PlayWallCore/src/main/java/de/tobias/playpad/project/Project.java
+++ b/PlayWallCore/src/main/java/de/tobias/playpad/project/Project.java
@@ -48,9 +48,9 @@ public class Project {
 	 */
 	final ProjectReference projectReference;
 
-	private transient IntegerProperty activePlayerProperty;
-	private transient IntegerProperty notFoundMediaProperty;
-	private transient ProjectUpdateListener syncListener;
+	private final transient IntegerProperty activePlayerProperty;
+	private final transient IntegerProperty notFoundMediaProperty;
+	private final transient ProjectUpdateListener syncListener;
 
 	public Project(ProjectReference ref) {
 		this.projectReference = ref;