diff --git a/e9e2d173359f7a1ef441f8d5cc9af0c1/description b/e9e2d173359f7a1ef441f8d5cc9af0c1/description
index cb19ac9..67d6a92 100644
--- a/e9e2d173359f7a1ef441f8d5cc9af0c1/description
+++ b/e9e2d173359f7a1ef441f8d5cc9af0c1/description
@@ -1,6 +1,7 @@
 phase 1: init
 
 REQUIREMENTS
+* PWM DAC
 * GPIO input
 * interrupts
 * PWM outputs