diff --git a/tests/suites/test_suite_ecp.data b/tests/suites/test_suite_ecp.data
index 070787d3e..0c30e4a2e 100644
--- a/tests/suites/test_suite_ecp.data
+++ b/tests/suites/test_suite_ecp.data
@@ -362,43 +362,51 @@ ECP check privkey #7 (montgomery curve25519, msb OK)
 depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE25519:"4000000000000000000000000000000000000000000000000000000000000000":0
 
-ECP check privkey #8 (montgomery curve25519, bit 0 set)
+ECP check privkey #8 (montgomery curve25519, msb not OK)
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE25519:"0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8":MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECP check privkey #9 (montgomery curve25519, bit 0 set)
 depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE25519:"4000000000000000000000000000000000000000000000000000000000000001":MBEDTLS_ERR_ECP_INVALID_KEY
 
-ECP check privkey #9 (montgomery curve25519, bit 1 set)
+ECP check privkey #10 (montgomery curve25519, bit 1 set)
 depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE25519:"4000000000000000000000000000000000000000000000000000000000000002":MBEDTLS_ERR_ECP_INVALID_KEY
 
-ECP check privkey #10 (montgomery curve25519, bit 2 set)
+ECP check privkey #11 (montgomery curve25519, bit 2 set)
 depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE25519:"4000000000000000000000000000000000000000000000000000000000000004":MBEDTLS_ERR_ECP_INVALID_KEY
 
-ECP check privkey #11 (montgomery curve25519, OK)
+ECP check privkey #12 (montgomery curve25519, OK)
 depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE25519:"7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8":0
 
-ECP check privkey #12 (montgomery curve448, too big)
+ECP check privkey #13 (montgomery curve448, too big)
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE448:"800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":MBEDTLS_ERR_ECP_INVALID_KEY
 
-ECP check privkey #13 (montgomery curve448, not big enough)
+ECP check privkey #14 (montgomery curve448, not big enough)
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE448:"80000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":MBEDTLS_ERR_ECP_INVALID_KEY
 
-ECP check privkey #14 (montgomery curve448, msb OK)
+ECP check privkey #15 (montgomery curve448, msb OK)
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE448:"8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":0
 
-ECP check privkey #15 (montgomery curve448, bit 0 set)
+ECP check privkey #15 (montgomery curve448, msb not OK)
+depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
+mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE448:"0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC":MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECP check privkey #17 (montgomery curve448, bit 0 set)
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE448:"8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001":MBEDTLS_ERR_ECP_INVALID_KEY
 
-ECP check privkey #16 (montgomery curve448, bit 1 set)
+ECP check privkey #18 (montgomery curve448, bit 1 set)
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE448:"8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002":MBEDTLS_ERR_ECP_INVALID_KEY
 
-ECP check privkey #17 (montgomery curve448, OK)
+ECP check privkey #19 (montgomery curve448, OK)
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
 mbedtls_ecp_check_privkey:MBEDTLS_ECP_DP_CURVE448:"8FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC":0
 
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index defb3f42e..6eca2f7f2 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -3783,6 +3783,10 @@ PSA generate key: ECC, Curve25519, good
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:PSA_WANT_ECC_MONTGOMERY_255
 generate_key:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):255:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDH:PSA_SUCCESS:0
 
+PSA generate key: ECC, Curve448, good
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:PSA_WANT_ECC_MONTGOMERY_448
+generate_key:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):448:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDH:PSA_SUCCESS:0
+
 PSA generate key: RSA, default e
 generate_key_rsa:512:"":PSA_SUCCESS