diff --git a/README.md b/README.md
index f6254a87..883ab75e 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,7 @@ opam install "mirage>=4.0.0"
 Then, the unikernel can be _configured_:
 
 ```bash
+rm Makefile # To let mirage create its custom Makefile instead
 mirage configure -f mirage/config.ml -t <TARGET> ...
 ```