diff --git a/api/onnx_web/chain/source_txt2img.py b/api/onnx_web/chain/source_txt2img.py
index 8a4dd61b..cf2f039d 100644
--- a/api/onnx_web/chain/source_txt2img.py
+++ b/api/onnx_web/chain/source_txt2img.py
@@ -90,7 +90,7 @@ class SourceTxt2ImgStage(BaseStage):
             )
             latents[
                 :, :, top // 8 : bottom // 8, left // 8 : right // 8
-            ] = get_latents_from_seed(region_seed, latent_size, params.batch)
+            ] = get_latents_from_seed(region_seed, Size(right - left, bottom - top), params.batch)
 
         pipe_type = params.get_valid_pipeline("txt2img")
         pipe = load_pipeline(
diff --git a/api/onnx_web/chain/tile.py b/api/onnx_web/chain/tile.py
index 4d8bee2d..e3505984 100644
--- a/api/onnx_web/chain/tile.py
+++ b/api/onnx_web/chain/tile.py
@@ -106,11 +106,11 @@ def make_tile_mask(
     # sort gradient points
     p1_h = adj_tile_h
     p2_h = tile_h - adj_tile_h
-    points_h = [0, min(p1_h, p2_h), max(p1_h, p2_h), tile]
+    points_h = [0, min(p1_h, p2_h), max(p1_h, p2_h), tile_h]
 
     p1_w = adj_tile_w
     p2_w = tile_w - adj_tile_w
-    points_w = [0, min(p1_w, p2_w), max(p1_w, p2_w), tile]
+    points_w = [0, min(p1_w, p2_w), max(p1_w, p2_w), tile_w]
 
     # build gradients
     grad_x, grad_y = [0, 1, 1, 0], [0, 1, 1, 0]