diff --git a/README.md b/README.md
index c15af826..3931fc99 100644
--- a/README.md
+++ b/README.md
@@ -13,4 +13,9 @@ examples as documentation.
 * Nightly rust, probably quite a recent version.
 * Devkitarm.
 
-This is probably easiest to do in a container.
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+This is probably easiest to do in a container.
+
+## Makefile
+
+The Makefile is written such that `make d-{example name}` runs the debug build
+of the example, and `make r-{example name}` runs the release build.
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