diff --git a/run.sh b/run.sh
index caf873f..5bfed1c 100755
--- a/run.sh
+++ b/run.sh
@@ -134,7 +134,7 @@ status=$?
 ## Finish ##
 
 log "Kill spawned processes."
-pkill -P $$
+pkill -eP $$
 
 log "Exiting with status '$status'."
 exit $status