diff --git a/tests/thread/thread_stacksize1.py b/tests/thread/thread_stacksize1.py
index 39fe235b22..5827237a17 100644
--- a/tests/thread/thread_stacksize1.py
+++ b/tests/thread/thread_stacksize1.py
@@ -9,7 +9,7 @@ import _thread
 if sys.implementation.name == "micropython":
     sz = 2 * 1024
 else:
-    sz = 32 * 1024
+    sz = 512 * 1024
 
 
 def foo():