diff --git a/app/drivers/kscan/kscan_mock.c b/app/drivers/kscan/kscan_mock.c
index 57862b0d..e1a41bbf 100644
--- a/app/drivers/kscan/kscan_mock.c
+++ b/app/drivers/kscan/kscan_mock.c
@@ -9,6 +9,7 @@
 #include <stdlib.h>
 #include <zephyr/device.h>
 #include <zephyr/drivers/kscan.h>
+#include <zephyr/kernel.h>
 #include <zephyr/logging/log.h>
 
 LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);