diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py
index 0033eedce003eefdb017d965fdc833901c53eb0a..1d1bde1fd45eb76b4639f8c720619f6712e25dcd 100755
--- a/scripts/clang-tools/gen_compile_commands.py
+++ b/scripts/clang-tools/gen_compile_commands.py
@@ -13,6 +13,7 @@ import logging
 import os
 import re
 import subprocess
+import sys
 
 _DEFAULT_OUTPUT = 'compile_commands.json'
 _DEFAULT_LOG_LEVEL = 'WARNING'