diff --git a/comfy/pinned_memory.py b/comfy/pinned_memory.py
index be303b4f1..923872dac 100644
--- a/comfy/pinned_memory.py
+++ b/comfy/pinned_memory.py
@@ -31,4 +31,5 @@ def unpin_memory(module):
         return 0
     size = module._pin.numel() * module._pin.element_size()
     comfy.model_management.unpin_memory(module._pin)
+    del module._pin
     return size