diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 2009ad6699..c41b559a17 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -1446,6 +1446,9 @@ parse_input/server1.req.hashsymbol.sha256: server1.key
 
 parse_input/server1.req.spaces.sha256: server1.key
 	$(MBEDTLS_CERT_REQ) output_file=$@ filename=$< subject_name="C=NL,O= PolarSSL ,CN=PolarSSL Server 1" md=SHA256
+
+parse_input/server1.req.asciichars.sha256: server1.key
+	$(MBEDTLS_CERT_REQ) output_file=$@ filename=$< subject_name="C=NL,O=极地SSL,CN=PolarSSL Server 1" md=SHA256
 # server2*
 
 server2_pwd_ec = PolarSSLTest
@@ -1599,7 +1602,9 @@ server1.hashsymbol.crt: server1.key parse_input/server1.req.hashsymbol.sha256 $(
 	$(MBEDTLS_CERT_WRITE) request_file=parse_input/server1.req.hashsymbol.sha256 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) version=1 not_before=20190210144406 not_after=20290210144406 md=SHA1 version=3 output_file=$@
 server1.spaces.crt: server1.key parse_input/server1.req.spaces.sha256 $(test_ca_crt) $(test_ca_key_file_rsa)
 	$(MBEDTLS_CERT_WRITE) request_file=parse_input/server1.req.spaces.sha256 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) version=1 not_before=20190210144406 not_after=20290210144406 md=SHA1 version=3 output_file=$@
-all_final += server1.crt server1.noauthid.crt parse_input/server1.crt.der server1.commas.crt server1.hashsymbol.crt server1.spaces.crt
+server1.asciichars.crt: server1.key parse_input/server1.req.asciichars.sha256 $(test_ca_crt) $(test_ca_key_file_rsa)
+	$(MBEDTLS_CERT_WRITE) request_file=parse_input/server1.req.asciichars.sha256 issuer_crt=$(test_ca_crt) issuer_key=$(test_ca_key_file_rsa) issuer_pwd=$(test_ca_pwd_rsa) version=1 not_before=20190210144406 not_after=20290210144406 md=SHA1 version=3 output_file=$@
+all_final += server1.crt server1.noauthid.crt parse_input/server1.crt.der server1.commas.crt server1.hashsymbol.crt server1.spaces.crt server1.asciichars.crt
 
 parse_input/server1.key_usage.crt: parse_input/server1.req.sha256
 server1.key_usage.crt: server1.req.sha256
diff --git a/tests/data_files/server1.asciichars.crt b/tests/data_files/server1.asciichars.crt
new file mode 100644
index 0000000000..824e46e06c
--- /dev/null
+++ b/tests/data_files/server1.asciichars.crt
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index b154db924f..e1db7178b3 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -455,6 +455,10 @@ X509 Get Distinguished Name #7
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA1
 mbedtls_x509_dn_gets:"data_files/server1.spaces.crt":"subject":"C=NL, O=\\ PolarSSL\\ , CN=PolarSSL Server 1"
 
+X509 Get Distinguished Name #8
+depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA1
+mbedtls_x509_dn_gets:"data_files/server1.asciichars.crt":"subject":"C=NL, O=\\E6\\9E\\81\\E5\\9C\\B0SSL, CN=PolarSSL Server 1"
+
 X509 Get Modified DN #1
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA1
 mbedtls_x509_dn_gets_subject_replace:"data_files/server1.crt":"Modified":"C=NL, O=Modified, CN=PolarSSL Server 1":0