diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index 0ca27a9d68..4fc5054b49 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -1170,6 +1170,9 @@ x509_crt_parse_cn_inet_pton:"\:\:ffff\:1111.2.3.4":"":0
 X509 CRT parse CN: IPv6 invalid address IPv4-mapped #3
 x509_crt_parse_cn_inet_pton:"\:\:1.2.3.4\:ffff":"":0
 
+X509 CRT parse CN: IPv6 invalid address IPv4-mapped #4
+x509_crt_parse_cn_inet_pton:"1.2.3.4\:":"":0
+
 X509 CRT verification with ca callback: failure
 depends_on:MBEDTLS_PEM_PARSE_C:PSA_WANT_ALG_SHA_1:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK
 x509_verify_ca_cb_failure:"../framework/data_files/server1.crt":"../framework/data_files/test-ca.crt":"NULL":MBEDTLS_ERR_X509_FATAL_ERROR