diff --git a/serving-tiles/updating-as-people-edit-osm2pgsql-replication.md b/serving-tiles/updating-as-people-edit-osm2pgsql-replication.md
index 59f117e..1feed3d 100644
--- a/serving-tiles/updating-as-people-edit-osm2pgsql-replication.md
+++ b/serving-tiles/updating-as-people-edit-osm2pgsql-replication.md
@@ -215,7 +215,7 @@ It's a good idea to clear the "osm2pgsql-replication is running" flag when rende
 
 and add:
 
-    ExecStartPre=rm /var/cache/renderd/update_tiles.sh.running
+    ExecStartPre=rm -f /var/cache/renderd/update_tiles.sh.running
 
 in the "[Service]" section.  Then: