diff --git a/Tools/autotest/autotest.py b/Tools/autotest/autotest.py
index 5d362c41ec..ce62f81b6d 100755
--- a/Tools/autotest/autotest.py
+++ b/Tools/autotest/autotest.py
@@ -117,7 +117,8 @@ def build_binaries():
 
     # copy the script (and various libraries used by the script) as it
     # changes git branch, which can change the script while running
-    for thing in "build_binaries.py", "generate_manifest.py", "gen_stable.py", "build_binaries_history.py", "board_list.py":
+    for thing in ["build_binaries.py", "generate_manifest.py", "gen_stable.py", "build_binaries_history.py",
+                  "board_list.py", "build_sizes.py"]:
         orig = util.reltopdir('Tools/scripts/%s' % thing)
         copy = util.reltopdir('./%s' % thing)
         shutil.copy2(orig, copy)