diff --git a/third_party/xla/xla/debug_options_flags.cc b/third_party/xla/xla/debug_options_flags.cc
index 5b7ed2f61b2..ba8f167e173 100644
--- a/third_party/xla/xla/debug_options_flags.cc
+++ b/third_party/xla/xla/debug_options_flags.cc
@@ -274,6 +274,7 @@ DebugOptions DefaultDebugOptionsIgnoringFlags() {
   opts.set_xla_detailed_logging(true);
   opts.set_xla_enable_dumping(true);
 
+  opts.set_xla_gpu_enable_dynamic_slice_fusion(false);
   opts.set_xla_gpu_nccl_termination_timeout_seconds(-1);
   opts.set_xla_gpu_enable_shared_constants(true);
   opts.set_xla_gpu_enable_nccl_user_buffers(false);