diff --git a/nds/PysparkBenchReport.py b/nds/PysparkBenchReport.py
index 6f56c27..1dcf65c 100644
--- a/nds/PysparkBenchReport.py
+++ b/nds/PysparkBenchReport.py
@@ -76,6 +76,7 @@ def _register_python_listener(self):
             listener.register()
         except TypeError as e:
             print("Not found com.nvidia.spark.rapids.listener.Manager", str(e))
+            listener = None
         return listener
 
     def _get_spark_conf(self):