diff --git a/core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/exceptions/illegalmonitorstate/IllegalMonitorStateExceptionUnitTest.java b/core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/exceptions/illegalmonitorstate/IllegalMonitorStateExceptionUnitTest.java
index a729facdbd..82c00bc72f 100644
--- a/core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/exceptions/illegalmonitorstate/IllegalMonitorStateExceptionUnitTest.java
+++ b/core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/exceptions/illegalmonitorstate/IllegalMonitorStateExceptionUnitTest.java
@@ -20,6 +20,8 @@ public class IllegalMonitorStateExceptionUnitTest {
 
         senderThread.join(1000);
         receiverThread.join(1000);
+        
+        Thread.sleep(2000);
 
         assertEquals("test", receiver.getMessage());
         assertFalse(sender.hasIllegalMonitorStateExceptionOccurred());