diff --git a/owner/src/test/java/org/aeonbits/owner/event/ExceptionTests.java b/owner/src/test/java/org/aeonbits/owner/event/ExceptionTests.java
index 6ca87c76..8ddd2037 100644
--- a/owner/src/test/java/org/aeonbits/owner/event/ExceptionTests.java
+++ b/owner/src/test/java/org/aeonbits/owner/event/ExceptionTests.java
@@ -18,7 +18,7 @@ public class ExceptionTests {
     @Test
     public void testRollbackBatchExceptionConstruction() {
         // just ensure all constructors are available on the class and the hierarchy is correct
-        RollbackException ex = new RollbackBatchException();
+        new RollbackBatchException();
         new RollbackBatchException("message");
         new RollbackBatchException(new Exception());
         new RollbackBatchException("message", new Exception());
@@ -27,7 +27,7 @@ public void testRollbackBatchExceptionConstruction() {
     @Test
     public void testRollbackOperationExceptionConstruction() {
         // just ensure all constructors are available on the class and the hierarchy is correct
-        RollbackException ex = new RollbackOperationException();
+        new RollbackOperationException();
         new RollbackOperationException("message");
         new RollbackOperationException(new Exception());
         new RollbackOperationException("message", new Exception());