diff --git a/src/BSDiff.jl b/src/BSDiff.jl
index c9d7527..34ab7ec 100644
--- a/src/BSDiff.jl
+++ b/src/BSDiff.jl
@@ -133,7 +133,6 @@ function bspatch(
         arg_write(new) do new_io
             new_io = BufferedOutputStream(new_io)
             apply_patch(patch_obj, old_data, new_io)
-            finalize(patch_obj)
             flush(new_io)
         end
     end