diff --git a/pympipool/shared/executorbase.py b/pympipool/shared/executorbase.py
index 8e64096a..39536877 100644
--- a/pympipool/shared/executorbase.py
+++ b/pympipool/shared/executorbase.py
@@ -62,7 +62,7 @@ def __len__(self):
 
     def __del__(self):
         try:
-            self.shutdown(wait=True)
+            self.shutdown(wait=False)
         except (AttributeError, RuntimeError):
             pass