diff --git a/replicate/stream.py b/replicate/stream.py
index e837abd..646cf47 100644
--- a/replicate/stream.py
+++ b/replicate/stream.py
@@ -76,7 +76,7 @@ def __init__(
     ) -> None:
         self.client = client
         self.response = response
-        self.use_file_output = use_file_output or True
+        self.use_file_output = use_file_output if use_file_output is not None else True
         content_type, _, _ = response.headers["content-type"].partition(";")
         if content_type != "text/event-stream":
             raise ValueError(