diff --git a/andor-test/01_init_and_discover.py b/andor-test/01_init_and_discover.py
index 35d9fc8..f2736f9 100644
--- a/andor-test/01_init_and_discover.py
+++ b/andor-test/01_init_and_discover.py
@@ -1,33 +1,32 @@
 import ctypes
 import os
 
-# Load DLL with stdcall convention
+# Load DLL
 dll_path = os.path.join(os.path.dirname(__file__), "libs", "atcore.dll")
-atcore = ctypes.WinDLL(dll_path)
+lib = ctypes.CDLL(dll_path, winmode=0)
 
 # Type definitions
 AT_H = ctypes.c_int
 AT_64 = ctypes.c_longlong
-AT_BOOL = ctypes.c_int
 
 # Constants
 AT_SUCCESS = 0
 AT_HANDLE_SYSTEM = 1
 
-# Setup AT_InitialiseLibrary
-atcore.AT_InitialiseLibrary.argtypes = []
-atcore.AT_InitialiseLibrary.restype = ctypes.c_int
+# Define AT_InitialiseLibrary
+lib.AT_InitialiseLibrary.argtypes = []
+lib.AT_InitialiseLibrary.restype = ctypes.c_int
 
-# Setup AT_GetInt
-atcore.AT_GetInt.argtypes = [AT_H, ctypes.c_wchar_p, ctypes.POINTER(AT_64)]
-atcore.AT_GetInt.restype = ctypes.c_int
+# Define AT_GetInt
+lib.AT_GetInt.argtypes = [AT_H, ctypes.c_wchar_p, ctypes.POINTER(AT_64)]
+lib.AT_GetInt.restype = ctypes.c_int
 
-# Setup AT_FinaliseLibrary
-atcore.AT_FinaliseLibrary.argtypes = []
-atcore.AT_FinaliseLibrary.restype = ctypes.c_int
+# Define AT_FinaliseLibrary
+lib.AT_FinaliseLibrary.argtypes = []
+lib.AT_FinaliseLibrary.restype = ctypes.c_int
 
 print("Initializing library...")
-ret = atcore.AT_InitialiseLibrary()
+ret = lib.AT_InitialiseLibrary()
 if ret != AT_SUCCESS:
     print(f"ERROR: Initialize failed, code: {ret}")
     exit(1)
@@ -35,14 +34,14 @@ print("Initialize OK")
 
 # Get device count
 device_count = AT_64(0)
-ret = atcore.AT_GetInt(AT_HANDLE_SYSTEM, "Device Count", ctypes.byref(device_count))
+ret = lib.AT_GetInt(AT_HANDLE_SYSTEM, "Device Count", ctypes.byref(device_count))
 if ret != AT_SUCCESS:
     print(f"ERROR: Get device count failed, code: {ret}")
 else:
     print(f"Device count: {device_count.value}")
 
 # Finalize
-ret = atcore.AT_FinaliseLibrary()
+ret = lib.AT_FinaliseLibrary()
 if ret != AT_SUCCESS:
     print(f"ERROR: Finalize failed, code: {ret}")
 else: