diff --git a/nimble/host/src/ble_aes_ccm.c b/nimble/host/src/ble_aes_ccm.c
index 98d1d63c0..adfbcd739 100644
--- a/nimble/host/src/ble_aes_ccm.c
+++ b/nimble/host/src/ble_aes_ccm.c
@@ -111,6 +111,7 @@ ble_aes_ccm_encrypt_be(const uint8_t *key, const uint8_t *plaintext, uint8_t *en
 }
 
 #else
+#include <tinycrypt/aes.h>
 #include <tinycrypt/constants.h>
 int
 ble_aes_ccm_encrypt_be(const uint8_t *key, const uint8_t *plaintext, uint8_t *enc_data)