diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 049e8cf..5740b11 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -46,6 +46,9 @@
 	$(OPENSSL) req -x509 -config $(test_ca_config_file) -key $(test_ca_key_file_rsa) -passin "pass:$(test_ca_pwd_rsa)" -set_serial 0 -days 3653 -sha256 -in test-ca.csr -out $@
 all_final += test-ca-sha256.crt
 
+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 $@
+
 cli_crt_key_file_rsa = cli-rsa.key
 cli_crt_extensions_file = cli.opensslconf
 
diff --git a/tests/data_files/crl-idp.pem b/tests/data_files/crl-idp.pem
new file mode 100644
index 0000000..a229e7d
--- /dev/null
+++ b/tests/data_files/crl-idp.pem
@@ -0,0 +1,12 @@
+-----BEGIN X509 CRL-----
+MIIBszCBnAIBATANBgkqhkiG9w0BAQsFADA7MQswCQYDVQQGEwJOTDERMA8GA1UE
+ChMIUG9sYXJTU0wxGTAXBgNVBAMTEFBvbGFyU1NMIFRlc3QgQ0EXDTE4MDMxNDA3
+MzE0OFoXDTI4MDMxNDA3MzE0OFqgLTArMCkGA1UdHAEB/wQfMB2gG6AZhhdodHRw
+Oi8vcGtpLmV4YW1wbGUuY29tLzANBgkqhkiG9w0BAQsFAAOCAQEAs/vp1Ybq9Lj/
+YM+O2uBqhRNdt494GYSYcZcltbQDwLgDwsFQ9S+q5zBtanhxiF3C6dyDoWS6xyY3
+dkdO9kK2YAQLNaFBCsKRrI9vGKuF5/1uIr0a8cQcqVzyRI9uK0KgGEk9/APGtqob
+nj/nt2ryGC+yEh20FmvwFn1vN5xaWK3uUIJCNDTZe+KQn150iAU/mWZG2xDdSXgm
+JtpTrY6toBgTwDGyus2wIDvAF6rBc1lRoR0BPuTR1fcUPMvr8jceZqG+xuH+vmkU
+j1B4Tu+K27ZmZMlhltfgwLzcgH9Ee1TgWPN2QqMzeZW/vNMyIIvWAWk2cFyCJj6r
+16/9upL64w==
+-----END X509 CRL-----
diff --git a/tests/data_files/test-ca.opensslconf b/tests/data_files/test-ca.opensslconf
index 12835df..6ca6613 100644
--- a/tests/data_files/test-ca.opensslconf
+++ b/tests/data_files/test-ca.opensslconf
@@ -11,3 +11,12 @@
 subjectKeyIdentifier=hash
 authorityKeyIdentifier=keyid:always,issuer:always
 basicConstraints = CA:true
+
+[test_ca]
+database = /dev/null
+
+[crl_ext_idp]
+issuingDistributionPoint=critical, @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 73ccead..71049c7 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -202,6 +202,10 @@
 depends_on:MBEDTLS_PEM_PARSE_C
 mbedtls_x509_crl_parse:"data_files/crl-malformed-trailing-spaces.pem":MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT
 
+X509 CRL Unsupported critical extension (issuingDistributionPoint)
+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 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"