diff --git a/examples/suit_update/coap_handler.c b/examples/suit_update/coap_handler.c
index 69a12d6f80..e985ce6b2e 100644
--- a/examples/suit_update/coap_handler.c
+++ b/examples/suit_update/coap_handler.c
@@ -12,6 +12,7 @@
 
 #include "net/nanocoap.h"
 #include "suit/transport/coap.h"
+#include "kernel_defines.h"
 
 static ssize_t _riot_board_handler(coap_pkt_t *pkt, uint8_t *buf, size_t len, void *context)
 {