diff --git a/django/core/cache/backends/filebased.py b/django/core/cache/backends/filebased.py
index 88a8b528b5..2a8b24ddfc 100644
--- a/django/core/cache/backends/filebased.py
+++ b/django/core/cache/backends/filebased.py
@@ -55,7 +55,7 @@ class FileBasedCache(BaseCache):
             with io.open(fd, 'wb') as f:
                 expiry = self.get_backend_timeout(timeout)
                 f.write(pickle.dumps(expiry, pickle.HIGHEST_PROTOCOL))
-                f.write(zlib.compress(pickle.dumps(value, pickle.HIGHEST_PROTOCOL), -1))
+                f.write(zlib.compress(pickle.dumps(value, pickle.HIGHEST_PROTOCOL)))
             file_move_safe(tmp_path, fname, allow_overwrite=True)
             renamed = True
         finally: