diff --git a/2018/readme.md b/2018/readme.md
index 3f9c8ad..43bbae5 100644
--- a/2018/readme.md
+++ b/2018/readme.md
@@ -8,3 +8,9 @@ distribution doesn't offer a new enough version, running in docker is as easy as
 ```
 docker run --rm -it -v $(pwd):/go/src/ -w /go/src golang:1.11 go build dayXX-X.go
 ```
+
+The makefile also uses docker, so you can just run:
+
+```
+make dayXX-X
+```