diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index a2a43d3823..d47ac3c6b4 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -184,7 +184,7 @@ x509_cert_info:"data_files/parse_input/server3.crt":"cert. version     \: 3\nser
 
 X509 CRT information Bitstring in subject name
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA1
-x509_cert_info:"data_files/parse_input/bitstring-in-dn.pem":"cert. version     \: 3\nserial number     \: 02\nissuer name       \: CN=Test CA 01, ST=Ecnivorp, C=XX, emailAddress=tca@example.com, O=Test CA Authority\nsubject name      \: C=XX, O=tca, ST=Ecnivorp, OU=TCA, CN=Client, emailAddress=client@example.com, serialNumber=7101012255, uniqueIdentifier=\\007101012255\nissued  on        \: 2015-03-11 12\:06\:51\nexpires on        \: 2025-03-08 12\:06\:51\nsigned using      \: RSA with SHA1\nRSA key size      \: 2048 bits\nbasic constraints \: CA=false\nsubject alt name  \:\n    rfc822Name \: client@example.com\next key usage     \: TLS Web Client Authentication\n"
+x509_cert_info:"data_files/parse_input/bitstring-in-dn.pem":"cert. version     \: 3\nserial number     \: 02\nissuer name       \: CN=Test CA 01, ST=Ecnivorp, C=XX, emailAddress=tca@example.com, O=Test CA Authority\nsubject name      \: C=XX, O=tca, ST=Ecnivorp, OU=TCA, CN=Client, emailAddress=client@example.com, serialNumber=7101012255, uniqueIdentifier=#030B0037313031303132323535\nissued  on        \: 2015-03-11 12\:06\:51\nexpires on        \: 2025-03-08 12\:06\:51\nsigned using      \: RSA with SHA1\nRSA key size      \: 2048 bits\nbasic constraints \: CA=false\nsubject alt name  \:\n    rfc822Name \: client@example.com\next key usage     \: TLS Web Client Authentication\n"
 
 X509 CRT information Non-ASCII string in issuer name and subject name
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA256
diff --git a/tests/suites/test_suite_x509write.data b/tests/suites/test_suite_x509write.data
index 0827f948c2..98017d6e72 100644
--- a/tests/suites/test_suite_x509write.data
+++ b/tests/suites/test_suite_x509write.data
@@ -202,11 +202,20 @@ mbedtls_x509_string_to_names:"C=NL, O=\\4F\\66\\66\\73\\70\\61\\72\\6B, OU=Polar
 X509 String to Names #12 (Escape ascii hexpairs lowercase encoded)
 mbedtls_x509_string_to_names:"C=NL, O=\\4f\\66\\66\\73\\70\\61\\72\\6b, OU=PolarSSL":"C=NL, O=Offspark, OU=PolarSSL":0
 
-X509 String to Names #13 (Escape non-ascii hexpairs)
+X509 String to Names #13 (Invalid hexpair escape at end of string)
+mbedtls_x509_string_to_names:"C=NL, O=\\4f\\66\\66\\73\\70\\61\\72\\6, OU=PolarSSL":"":MBEDTLS_ERR_X509_INVALID_NAME
+
+X509 String to Names #14 (Escape non-ascii hexpairs)
 mbedtls_x509_string_to_names:"C=NL, O=Of\\00spark, OU=PolarSSL":"C=NL, O=Of\\00spark, OU=PolarSSL":0
 
-X509 String to Names #14 (Invalid hexpairs)
+X509 String to Names #15 (Invalid hexpairs)
 mbedtls_x509_string_to_names:"C=NL, O=Of\\flspark, OU=PolarSSL":"":MBEDTLS_ERR_X509_INVALID_NAME
 
+X509 String to Names #16 (Accept numercoid/hexstring)
+mbedtls_x509_string_to_names:"C=NL, 2.5.4.10=#0C084F6666737061726B, OU=PolarSSL":"C=NL, O=Offspark, OU=PolarSSL":0
+
+X509 String to Names #17 (Accept numercoid/hexstring, output as bitstring)
+mbedtls_x509_string_to_names:"C=NL, 2.5.4.10=#03084F6666737061726B, OU=PolarSSL":"C=NL, O=#03084F6666737061726B, OU=PolarSSL":0
+
 Check max serial length
 x509_set_serial_check: