diff --git a/drivers/audio/wm8994.c b/drivers/audio/wm8994.c
index 9052a49a3df..51422d86515 100644
--- a/drivers/audio/wm8994.c
+++ b/drivers/audio/wm8994.c
@@ -38,6 +38,7 @@
 #include <fixedmath.h>
 #include <debug.h>
 
+#include <nuttx/arch.h>
 #include <nuttx/irq.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/clock.h>