diff --git a/gpustack_runtime/detector/pymtml/__init__.py b/gpustack_runtime/detector/pymtml/__init__.py
index 39b1a9f..ec5e2e1 100644
--- a/gpustack_runtime/detector/pymtml/__init__.py
+++ b/gpustack_runtime/detector/pymtml/__init__.py
@@ -69,7 +69,7 @@
 MTML_DEVICE_MPC_ENABLE = 1
 
 ## Error Codes ##
-MTML_SUCCESS = (0,)
+MTML_SUCCESS = 0
 MTML_ERROR_DRIVER_NOT_LOADED = 1
 MTML_ERROR_DRIVER_FAILURE = 2
 MTML_ERROR_INVALID_ARGUMENT = 3
@@ -78,8 +78,8 @@
 MTML_ERROR_INSUFFICIENT_SIZE = 6
 MTML_ERROR_NOT_FOUND = 7
 MTML_ERROR_INSUFFICIENT_MEMORY = 8
-MTML_ERROR_DRIVER_TOO_OLD = (9,)
-MTML_ERROR_DRIVER_TOO_NEW = (10,)
+MTML_ERROR_DRIVER_TOO_OLD = 9
+MTML_ERROR_DRIVER_TOO_NEW = 10
 MTML_ERROR_TIMEOUT = 11
 MTML_ERROR_UNKNOWN = 999
 MTML_ERROR_UNINITIALIZED = -99997