diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 5740b11..df4834d 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -48,6 +48,10 @@
 
 crl-idp.pem: $(test_ca_crt) $(test_ca_key_file_rsa) $(test_ca_config_file)
 	$(OPENSSL) ca -gencrl -batch -cert $(test_ca_crt) -keyfile $(test_ca_key_file_rsa) -key $(test_ca_pwd_rsa) -config $(test_ca_config_file) -name test_ca -md sha256 -crldays 3653 -crlexts crl_ext_idp -out $@
+all_final += crl-idp.pem
+crl-idpnc.pem: $(test_ca_crt) $(test_ca_key_file_rsa) $(test_ca_config_file)
+	$(OPENSSL) ca -gencrl -batch -cert $(test_ca_crt) -keyfile $(test_ca_key_file_rsa) -key $(test_ca_pwd_rsa) -config $(test_ca_config_file) -name test_ca -md sha256 -crldays 3653 -crlexts crl_ext_idp_nc -out $@
+all_final += crl-idpnc.pem
 
 cli_crt_key_file_rsa = cli-rsa.key
 cli_crt_extensions_file = cli.opensslconf
diff --git a/tests/data_files/test-ca.opensslconf b/tests/data_files/test-ca.opensslconf
index 6ca6613..571d96e 100644
--- a/tests/data_files/test-ca.opensslconf
+++ b/tests/data_files/test-ca.opensslconf
@@ -18,5 +18,8 @@
 [crl_ext_idp]
 issuingDistributionPoint=critical, @idpdata
 
+[crl_ext_idp_nc]
+issuingDistributionPoint=@idpdata
+
 [idpdata]
 fullname=URI:http://pki.example.com/
diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index 755c91d..57d2448 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -206,6 +206,10 @@
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
 mbedtls_x509_crl_parse:"data_files/crl-idp.pem":MBEDTLS_ERR_X509_INVALID_EXTENSIONS + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
+X509 CRL Unsupported non-critical extension (issuingDistributionPoint)
+depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+mbedtls_x509_crl_parse:"data_files/crl-idpnc.pem":0
+
 X509 CSR Information RSA with MD4
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_MD4_C
 mbedtls_x509_csr_info:"data_files/server1.req.md4":"CSR version   \: 1\nsubject name  \: C=NL, O=PolarSSL, CN=PolarSSL Server 1\nsigned using  \: RSA with MD4\nRSA key size  \: 2048 bits\n"
@@ -1233,6 +1237,9 @@
 X509 CRL ASN1 (extension data too short, crl-idp.pem byte 131)
 x509parse_crl:"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":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
 
+X509 CRL ASN1 (extension not critical explicit, crl-idp.pem byte 129)
+x509parse_crl:"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":"CRL version   \: 2\nissuer name   \: C=NL, O=PolarSSL, CN=PolarSSL Test CA\nthis update   \: 2018-03-14 07\:31\:48\nnext update   \: 2028-03-14 07\:31\:48\nRevoked certificates\:\nsigned using  \: RSA with SHA-256\n":0
+
 X509 CRT parse path #2 (one cert)
 depends_on:MBEDTLS_SHA1_C:MBEDTLS_RSA_C
 mbedtls_x509_crt_parse_path:"data_files/dir1":0:1