diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f49388a6..7ecde280c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@
   - explict clear caches on model load  
   - lock adetailer commit: `#a89c01d`  
   - xyzgrid fix progress calculation  
+  - vae tiling use default value if not set  
 
 ## Update for 2024-12-31
 
diff --git a/modules/sd_models.py b/modules/sd_models.py
index 46463a85a..c401ae6b7 100644
--- a/modules/sd_models.py
+++ b/modules/sd_models.py
@@ -246,9 +246,11 @@ def set_vae_options(sd_model, vae = None, op: str = 'model'):
     if hasattr(sd_model, "enable_vae_tiling"):
         if shared.opts.diffusers_vae_tiling:
             if hasattr(sd_model, 'vae') and hasattr(sd_model.vae, 'config') and hasattr(sd_model.vae.config, 'sample_size') and isinstance(sd_model.vae.config.sample_size, int):
-                sd_model.vae.tile_sample_min_size = int(shared.opts.diffusers_vae_tile_size)
-                sd_model.vae.tile_latent_min_size = int(sd_model.vae.config.sample_size / (2 ** (len(sd_model.vae.config.block_out_channels) - 1)))
-                sd_model.vae.tile_overlap_factor = float(shared.opts.diffusers_vae_tile_overlap)
+                if shared.opts.diffusers_vae_tile_size > 0:
+                    sd_model.vae.tile_sample_min_size = int(shared.opts.diffusers_vae_tile_size)
+                    sd_model.vae.tile_latent_min_size = int(sd_model.vae.config.sample_size / (2 ** (len(sd_model.vae.config.block_out_channels) - 1)))
+                if shared.opts.diffusers_vae_tile_overlap != 0.25:
+                    sd_model.vae.tile_overlap_factor = float(shared.opts.diffusers_vae_tile_overlap)
                 shared.log.debug(f'Setting {op}: component=VAE tiling=True tile={sd_model.vae.tile_sample_min_size} overlap={sd_model.vae.tile_overlap_factor}')
             else:
                 shared.log.debug(f'Setting {op}: component=VAE tiling=True')
diff --git a/modules/shared.py b/modules/shared.py
index 719200ed6..2ccb1e0a9 100644
--- a/modules/shared.py
+++ b/modules/shared.py
@@ -505,7 +505,7 @@ def get_default_modes():
     "no_half_vae": OptionInfo(False if not cmd_opts.use_openvino else True, "Full precision (--no-half-vae)"),
     "diffusers_vae_slicing": OptionInfo(True, "VAE slicing", gr.Checkbox, {"visible": native}),
     "diffusers_vae_tiling": OptionInfo(cmd_opts.lowvram or cmd_opts.medvram, "VAE tiling", gr.Checkbox, {"visible": native}),
-    "diffusers_vae_tile_size": OptionInfo(1024, "VAE tile size", gr.Slider, {"minimum": 256, "maximum": 4096, "step": 8 }),
+    "diffusers_vae_tile_size": OptionInfo(0, "VAE tile size", gr.Slider, {"minimum": 0, "maximum": 4096, "step": 8 }),
     "diffusers_vae_tile_overlap": OptionInfo(0.25, "VAE tile overlap", gr.Slider, {"minimum": 0, "maximum": 0.95, "step": 0.05 }),
     "sd_vae_sliced_encode": OptionInfo(False, "VAE sliced encode", gr.Checkbox, {"visible": not native}),
     "nan_skip": OptionInfo(False, "Skip Generation if NaN found in latents", gr.Checkbox),