diff --git a/tools/cpuunclaimed.py b/tools/cpuunclaimed.py
index 03f9df15b91c..e9258902c31e 100755
--- a/tools/cpuunclaimed.py
+++ b/tools/cpuunclaimed.py
@@ -61,7 +61,7 @@
 from time import sleep, strftime
 import argparse
 import multiprocessing
-from os import getpid, system, open, close, dup, unlink, O_WRONLY
+from os import open, close, dup, unlink, O_WRONLY
 from tempfile import NamedTemporaryFile
 
 # arguments