diff --git a/image/cleanup.sh b/image/cleanup.sh
index cfe7246..57e8c7b 100755
--- a/image/cleanup.sh
+++ b/image/cleanup.sh
@@ -9,7 +9,7 @@ rm -rf /tmp/* /var/tmp/*
 rm -rf /var/lib/apt/lists/*
 
 # clean up python bytecode
-find / -name *.pyc -delete
-find / -name *__pycache__* -delete
+find / -mount -name *.pyc -delete
+find / -mount -name *__pycache__* -delete
 
 rm -f /etc/ssh/ssh_host_*