diff --git a/invokeai/backend/model_manager/hash.py b/invokeai/backend/model_manager/hash.py
index c379b5ee77..9ab73cc650 100644
--- a/invokeai/backend/model_manager/hash.py
+++ b/invokeai/backend/model_manager/hash.py
@@ -166,7 +166,7 @@ class ModelHash:
             """Hashes a file using a hashlib algorithm."""
             hasher = hashlib.new(algorithm)
             with open(file_path, "rb") as f:
-                for chunk in iter(lambda: f.read(128 * 1024), b""):
+                for chunk in iter(lambda: f.read(8 * 1024), b""):
                     hasher.update(chunk)
             return hasher.hexdigest()