diff --git a/testing/trino-testing/src/main/java/io/trino/testing/AbstractDistributedEngineOnlyQueries.java b/testing/trino-testing/src/main/java/io/trino/testing/AbstractDistributedEngineOnlyQueries.java
index ae417103b393..bc36757a7840 100644
--- a/testing/trino-testing/src/main/java/io/trino/testing/AbstractDistributedEngineOnlyQueries.java
+++ b/testing/trino-testing/src/main/java/io/trino/testing/AbstractDistributedEngineOnlyQueries.java
@@ -54,7 +54,10 @@ public void setUp()
     @AfterClass(alwaysRun = true)
     public void shutdown()
     {
-        executorService.shutdownNow();
+        if (executorService != null) {
+            executorService.shutdownNow();
+            executorService = null;
+        }
     }
 
     /**