diff --git a/tests/scripts/analyze_outcomes.py b/tests/scripts/analyze_outcomes.py
index 293459b..0238555 100755
--- a/tests/scripts/analyze_outcomes.py
+++ b/tests/scripts/analyze_outcomes.py
@@ -247,7 +247,21 @@
                     'ECP test vectors secp256r1 rfc 5114',
                     'ECP test vectors secp384r1 rfc 5114',
                     'ECP test vectors secp521r1 rfc 5114',
-                ]
+                ],
+                'test_suite_pkparse': [
+                    # This is a known difference for Montgomery curves: in
+                    # reference component private keys are parsed using
+                    # mbedtls_mpi_read_binary_le(), while in driver version they
+                    # they are imported in PSA and there the parsing is done
+                    # through mbedtls_ecp_read_key(). Unfortunately the latter
+                    # fixes the errors which are intentionally set on the parsed
+                    # key and therefore the following test case is not failing
+                    # as expected.
+                    # This cause the following test to be guarded by ECP_C and
+                    # not being executed on the driver version.
+                    ('Key ASN1 (OneAsymmetricKey X25519, doesn\'t match masking '
+                     'requirements, from RFC8410 Appendix A but made into version 0)'),
+                ],
             }
         }
     },
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index 250efcc..f67c5ae 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -1086,7 +1086,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_TEST_HOOKS:MBEDTLS_ECP_MONTGOMERY_ENABLED:MBBEDTLS_ECP_C */
+/* BEGIN_CASE depends_on:MBEDTLS_TEST_HOOKS:MBEDTLS_ECP_MONTGOMERY_ENABLED:MBEDTLS_ECP_LIGHT */
 void genkey_mx_known_answer(int bits, data_t *seed, data_t *expected)
 {
     mbedtls_test_rnd_buf_info rnd_info;