diff --git a/src/diffusers/pipelines/stable_diffusion_xl_trt/models/model_utils.py b/src/diffusers/pipelines/stable_diffusion_xl_trt/models/model_utils.py
index a28942e739e8..5973131145aa 100644
--- a/src/diffusers/pipelines/stable_diffusion_xl_trt/models/model_utils.py
+++ b/src/diffusers/pipelines/stable_diffusion_xl_trt/models/model_utils.py
@@ -200,7 +200,7 @@ def __init__(self,
         self.min_batch = 1
         self.max_batch = max_batch_size
         self.min_image_shape = 256   # min image resolution: 256x256
-        self.max_image_shape = 1024  # max image resolution: 1024x1024
+        self.max_image_shape = 1280  # max image resolution: 1280x1280
         self.min_latent_shape = self.min_image_shape // 8
         self.max_latent_shape = self.max_image_shape // 8