diff --git a/tests/test_system_modules.py b/tests/test_system_modules.py
index 480a03e..150973c 100644
--- a/tests/test_system_modules.py
+++ b/tests/test_system_modules.py
@@ -1,7 +1,7 @@
 import windows
 import ctypes
 
-from pfwtest import *
+from .pfwtest import *
 
 @cross_heaven_gates
 def test_system_module_gc():