1 files changed, 5 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/broadcast/NullBroadcastService.java b/src/main/java/org/traccar/broadcast/NullBroadcastService.java
index 3f41299db..f95037990 100644
--- a/src/main/java/org/traccar/broadcast/NullBroadcastService.java
+++ b/src/main/java/org/traccar/broadcast/NullBroadcastService.java
@@ -18,6 +18,11 @@ package org.traccar.broadcast;
 public class NullBroadcastService implements BroadcastService {
 
     @Override
+    public boolean singleInstance() {
+        return true;
+    }
+
+    @Override
     public void registerListener(BroadcastInterface listener) {
     }