diff --git a/lxc/execute b/lxc/execute
index 03cb6a9..704202f 100755
--- a/lxc/execute
+++ b/lxc/execute
@@ -146,10 +146,10 @@ timeout -s KILL 10 \
 lxc-attach --clear-env -n piston -- \
     /bin/bash -l -c "\
         for i in {1..100}; do pkill -u runner$newinc --signal SIGKILL; done ;\
-        find /tmp -user runner$newinc -exec /bin/rm -rf {} \;\
-        find /var/tmp -user runner$newinc -exec /bin/rm -rf {} \;\
-        find /dev/shm -user runner$newinc -exec /bin/rm -rf {} \;\
-        find /run/lock -user runner$newinc -exec /bin/rm -rf {} \;\
+        find /tmp -user runner$newinc -exec /bin/rm -rf {} \; ;\
+        find /var/tmp -user runner$newinc -exec /bin/rm -rf {} \; ;\
+        find /dev/shm -user runner$newinc -exec /bin/rm -rf {} \; ;\
+        find /run/lock -user runner$newinc -exec /bin/rm -rf {} \; ;\
         " > /dev/null 2>&1 &
 
 rm -rf $basepath/tmp/$epoch