sorting header files.
diff --git a/tensorflow/core/util/BUILD b/tensorflow/core/util/BUILD
index 4c68fb4..de2dce9c 100644
--- a/tensorflow/core/util/BUILD
+++ b/tensorflow/core/util/BUILD
@@ -144,9 +144,9 @@
         "matmul_autotune.h",
         "matmul_bcast.h",
         "mirror_pad_mode.h",
+        "mkl_threadpool.h",
         "mkl_types.h",
         "mkl_util.h",
-        "mkl_threadpool.h",
         "overflow.h",
         "padding.h",
         "permutation_input_iterator.h",
@@ -274,8 +274,8 @@
 filegroup(
     name = "mkl_util_hdrs",
     srcs = [
-        "mkl_util.h",
         "mkl_threadpool.h",
+        "mkl_util.h",
     ],
     visibility = ["//tensorflow/core:__pkg__"],
 )