diff --git a/comfy/supported_models.py b/comfy/supported_models.py
index 383c82c3e..dd0f09f32 100644
--- a/comfy/supported_models.py
+++ b/comfy/supported_models.py
@@ -1026,7 +1026,7 @@ class ZImage(Lumina2):
         "shift": 3.0,
     }
 
-    memory_usage_factor = 1.7
+    memory_usage_factor = 2.0
 
     supported_inference_dtypes = [torch.bfloat16, torch.float16, torch.float32]