diff --git a/src/main/java/telraam/logic/positioner/PositionSender.java b/src/main/java/telraam/logic/positioner/PositionSender.java
index 54166d0..a111746 100644
--- a/src/main/java/telraam/logic/positioner/PositionSender.java
+++ b/src/main/java/telraam/logic/positioner/PositionSender.java
@@ -7,7 +7,7 @@
 import java.util.Map;
 
 public class PositionSender {
-    private final WebSocketMessage<List<Position>> message = new WebSocketMessage<>();
+    private final WebSocketMessage<Map<String, Object>> message = new WebSocketMessage<>();
     private final String name;
 
     public PositionSender(String name) {
@@ -16,11 +16,13 @@ public PositionSender(String name) {
     }
 
     public void send(List<Position> positions) {
-        Map<String, Object> data = Map.of(
+        Map<String, Object> payload = Map.of(
                 "positioner", this.name,
                 "positions", positions
         );
-        WebSocketMessageSingleton.getInstance().sendToAll(this.message);
+
+        message.setData(payload);
+        WebSocketMessageSingleton.getInstance().sendToAll(message);
     }
 
 }