diff --git a/script/test/test_proc.py b/script/test/test_proc.py
index 8ff1a9e..cfb8cb3 100644
--- a/script/test/test_proc.py
+++ b/script/test/test_proc.py
@@ -1,5 +1,5 @@
 import multiprocessing as mp 
-mp.set_start_method('spawn')
+mp.set_start_method('fork')
 
 def f(name):
     print('hello', name)