diff --git a/build_library/disk_layout_util.sh b/build_library/disk_layout_util.sh
index dbbd1a0704..7cd02a5f4e 100644
--- a/build_library/disk_layout_util.sh
+++ b/build_library/disk_layout_util.sh
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-CGPT_PY="${BUILD_LIBRARY_DIR}/cgpt.py"
+CGPT_PY="${BUILD_LIBRARY_DIR}/disk_util"
 
 cgpt_py() {
   if [[ -n "${FLAGS_adjust_part-}" ]]; then
diff --git a/build_library/cgpt.py b/build_library/disk_util
similarity index 100%
rename from build_library/cgpt.py
rename to build_library/disk_util