diff --git a/src/main/java/de/bluecolored/bluemap/api/markers/MarkerSet.java b/src/main/java/de/bluecolored/bluemap/api/markers/MarkerSet.java
index 2595181..bd238ae 100644
--- a/src/main/java/de/bluecolored/bluemap/api/markers/MarkerSet.java
+++ b/src/main/java/de/bluecolored/bluemap/api/markers/MarkerSet.java
@@ -241,7 +241,7 @@ public class MarkerSet {
 
         private String label;
         private Boolean toggleable, defaultHidden;
-        Integer sorting;
+        private Integer sorting;
 
         /**
          * Sets the label of the {@link MarkerSet}.