diff --git a/Lib/test/test_marshal.py b/Lib/test/test_marshal.py
index 068c4713e18..d2d6b487148 100644
--- a/Lib/test/test_marshal.py
+++ b/Lib/test/test_marshal.py
@@ -188,7 +188,7 @@ class BugsTestCase(unittest.TestCase):
         head = last = []
         # The max stack depth should match the value in Python/marshal.c.
         if os.name == 'nt' and hasattr(sys, 'gettotalrefcount'):
-            MAX_MARSHAL_STACK_DEPTH = 1500
+            MAX_MARSHAL_STACK_DEPTH = 1000
         else:
             MAX_MARSHAL_STACK_DEPTH = 2000
         for i in range(MAX_MARSHAL_STACK_DEPTH - 2):
diff --git a/Python/marshal.c b/Python/marshal.c
index ca64be39482..837aa4812c7 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -19,7 +19,7 @@
  * On Windows debug builds, reduce this value.
  */
 #if defined(MS_WINDOWS) && defined(_DEBUG)
-#define MAX_MARSHAL_STACK_DEPTH 1500
+#define MAX_MARSHAL_STACK_DEPTH 1000
 #else
 #define MAX_MARSHAL_STACK_DEPTH 2000
 #endif