diff --git a/debian/preinst b/debian/preinst
index 9451eb7..4302ac4 100644
--- a/debian/preinst
+++ b/debian/preinst
@@ -7,7 +7,7 @@ set -e
 
 case "$1" in
     install|upgrade)
-        find /etc/nginx/conf.d -name client-max-body-size-10M.conf -delete
+        test -f /etc/nginx/conf.d/client-max-body-size-10M.conf && rm /etc/nginx/conf.d/client-max-body-size-10M.conf
     ;;
     abort-upgrade)
     ;;