diff --git a/core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java b/core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java
index 0587728b92..b262097c63 100644
--- a/core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java
+++ b/core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java
@@ -5,8 +5,6 @@ import java.util.concurrent.ThreadLocalRandom;
 
 public class NumbersProducer implements Runnable {
 
-class NumbersProducer implements Runnable {
-
     private final BlockingQueue<Integer> numbersQueue;
     private final int poisonPill;
     private final int poisonPillPerProducer;