diff --git a/activestorage/lib/active_storage/service/s3_service.rb b/activestorage/lib/active_storage/service/s3_service.rb
index 958b172efb1bdc61dd32e9cf394fe14e2d9cca1e..69571197809aa932fc74fb1293c2ed4df4deac6b 100644
--- a/activestorage/lib/active_storage/service/s3_service.rb
+++ b/activestorage/lib/active_storage/service/s3_service.rb
@@ -85,7 +85,7 @@ def object_for(key)
       end
 
       # Reads the object for the given key in chunks, yielding each to the block.
-      def stream(key, &block)
+      def stream(key)
         object = object_for(key)
 
         chunk_size = 5.megabytes