diff --git a/files/er_safe_run.sh b/files/er_safe_run.sh
index 2de5f91..3da372d 100755
--- a/files/er_safe_run.sh
+++ b/files/er_safe_run.sh
@@ -2,4 +2,4 @@
 
 # Timeout after 4 hours as we've seen this script occasionally fail to
 # exit after running for days.
-flock -w 3600 timeout -k 60 14400 /var/lib/elastic-recheck/er_safe_run.lock $@
+flock -w 3600 /var/lib/elastic-recheck/er_safe_run.lock timeout -k 60 14400 $@