diff --git a/Makefile b/Makefile
index 28bfed98f65621c7a53b9aca277e7e7cf7c510e5..0af9965be8abe142ba30390293860e06cc974f84 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
-# This Makefile compiles and flashes four different programs:
+# Each .cpp file is independent.
+# Run "make thread", "make pi_threads", etc. to build one.
 
 CPPFLAGS=-Wall -O3 -pthread -std=c++11 -ffast-math