diff --git a/api/onnx_web/convert/diffusion/diffusion_xl.py b/api/onnx_web/convert/diffusion/diffusion_xl.py
index a4f11dd9..7a03b700 100644
--- a/api/onnx_web/convert/diffusion/diffusion_xl.py
+++ b/api/onnx_web/convert/diffusion/diffusion_xl.py
@@ -65,8 +65,10 @@ def convert_diffusion_diffusers_xl(
     if replace_vae is not None:
         vae_path = path.join(conversion.model_path, replace_vae)
         if check_ext(replace_vae, RESOLVE_FORMATS):
+            logger.debug("loading VAE from single tensor file: %s", vae_path)
             pipeline.vae = AutoencoderKL.from_single_file(vae_path)
         else:
+            logger.debug("loading pretrained VAE from path: %s", vae_path)
             pipeline.vae = AutoencoderKL.from_pretrained(vae_path)
 
     if path.exists(temp_path):