diff --git a/onnxscript/_framework_apis/torch_2_5.py b/onnxscript/_framework_apis/torch_2_5.py
index 6d458bc65..d011e0a17 100644
--- a/onnxscript/_framework_apis/torch_2_5.py
+++ b/onnxscript/_framework_apis/torch_2_5.py
@@ -25,7 +25,7 @@
 
 # Internal flag. Will go away.
 _TORCH_ONNX_SAVE_EXTERNAL_DATA_WITH_IR = (
-    os.getenv("TORCH_ONNX_OFFLOAD_EXTERNAL_DATA_WITH_IR") == "1"
+    os.getenv("TORCH_ONNX_OFFLOAD_EXTERNAL_DATA_WITH_IR") != "0"
 )