diff --git a/xla/debug_options_flags.cc b/xla/debug_options_flags.cc
index b223d7c0c320e..df05be304cf1a 100644
--- a/xla/debug_options_flags.cc
+++ b/xla/debug_options_flags.cc
@@ -252,7 +252,7 @@ DebugOptions DefaultDebugOptionsIgnoringFlags() {
 
   opts.set_xla_gpu_use_memcpy_local_p2p(false);
 
-  opts.set_xla_reduce_window_rewrite_base_length(32);
+  opts.set_xla_reduce_window_rewrite_base_length(16);
 
   opts.set_xla_gpu_require_complete_aot_autotune_results(false);