diff --git a/ws2812/ws2812_m0_48m.go b/ws2812/ws2812_m0_48m.go
index 7ce7cb3..15b501b 100644
--- a/ws2812/ws2812_m0_48m.go
+++ b/ws2812/ws2812_m0_48m.go
@@ -1,4 +1,4 @@
-// +build circuitplay_express itsybitsy_m0
+// +build circuitplay_express itsybitsy_m0 arduino_nano33
 
 package ws2812