diff --git a/comfy/model_management.py b/comfy/model_management.py
index 9fcb699bc..87baedd73 100644
--- a/comfy/model_management.py
+++ b/comfy/model_management.py
@@ -1169,6 +1169,7 @@ def pin_memory(tensor):
         TOTAL_PINNED_MEMORY += size
         return True
     else:
+        logging.warning("Pin error.")
         discard_cuda_async_error()
 
     return False
@@ -1199,6 +1200,7 @@ def unpin_memory(tensor):
             TOTAL_PINNED_MEMORY = 0
         return True
     else:
+        logging.warning("Unpin error.")
         discard_cuda_async_error()
 
     return False