diff --git a/comfy/model_management.py b/comfy/model_management.py
index def0af364..1eead636e 100644
--- a/comfy/model_management.py
+++ b/comfy/model_management.py
@@ -2008,7 +2008,7 @@ def supports_mxfp8_compute(device=None):
     return True
 
 def supports_fp64(device=None):
-    if is_device_mps(device):
+    if (device is not None and is_device_mps(device)) or mps_mode():
         return False
 
     if is_intel_xpu():