diff --git a/README b/README
index c2cfa6c..2b8ccdf 100644
--- a/README
+++ b/README
@@ -1,5 +1,10 @@
 A game of Pong.
 
+Controls
+========
+* Left racket's up-down keys are E-D.
+* Right racket's up-down keys are I-K.
+
 Requirements
 ===========
 * sdl2