diff --git a/test/acvpkat.c b/test/acvpkat.c
index 1657d86..d04924a 100644
--- a/test/acvpkat.c
+++ b/test/acvpkat.c
@@ -252,6 +252,12 @@ void siggen_KAT(const struct param_t *h) {
     json_object_object_add(tg_req, "I", json_object_new_string(sbuf));
     free(sbuf);
 
+    sbuf = malloc(2*params.n + 1);
+    // Store 'root' from the public key (same as in the secret key)
+    sprint_hex(sbuf, pk + XMSS_OID_LEN, params.n);
+    json_object_object_add(tg_req, "PK_root", json_object_new_string(sbuf));
+    free(sbuf);
+
     sbuf = malloc(2*(params.pk_bytes + XMSS_OID_LEN) + 1);
     sprint_hex(sbuf, pk, params.pk_bytes  + XMSS_OID_LEN);
     json_object_object_add(tg_res, "publicKey", json_object_new_string(sbuf));
@@ -281,7 +287,7 @@ int main() {
         {0x01, "XMSS-SHA2_10_256", "SHA256-N32", 10, 10},   // H10
         {0x0D, "XMSS-SHA2_10_192", "SHA256-N24", 10, 10},   // H10
         {0x10, "XMSS-SHAKE256_10_256", "SHAKE256-N32", 10, 10}, // H10
-        {0x13, "XMSS-SHAKE256_10_192", "SHA2KE56-N24", 10, 10}, // H10
+        {0x13, "XMSS-SHAKE256_10_192", "SHAKE256-N24", 10, 10}, // H10
 
         {0x02, "XMSS-SHA2_16_256", "SHA256-N32", 16, 5},    // H16
         {0x0E, "XMSS-SHA2_16_192", "SHA256-N24", 16, 5},    // H16