diff --git a/redisson/src/main/java/org/redisson/pubsub/AsyncSemaphore.java b/redisson/src/main/java/org/redisson/pubsub/AsyncSemaphore.java
index 9be08ee23..550aed0ba 100644
--- a/redisson/src/main/java/org/redisson/pubsub/AsyncSemaphore.java
+++ b/redisson/src/main/java/org/redisson/pubsub/AsyncSemaphore.java
@@ -119,5 +119,12 @@ public class AsyncSemaphore {
             acquire(runnable);
         }
     }
+
+    @Override
+    public String toString() {
+        return "AsyncSemaphore [counter=" + counter + "]";
+    }
+    
+    
     
 }