diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 17e0f90..d90ec30 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -378,6 +378,18 @@
 	$(FAKETIME) '2015-09-01 14:08:43' $(OPENSSL) req -x509 -new -subj "/C=UK/O=mbed TLS/CN=mbed TLS Test intermediate CA 3" -set_serial 77 -config $(test_ca_config_file) -extensions noext_ca -days 3650 -sha256 -key $< -out $@
 all_final += server5-ss-forgeca.crt
 
+server5-selfsigned.crt: server5.key
+	openssl req -x509 -key server5.key \
+        -sha256 -days 3650 -nodes \
+        -addext basicConstraints=critical,CA:FALSE \
+        -addext keyUsage=critical,digitalSignature \
+        -addext subjectKeyIdentifier=hash   \
+        -addext authorityKeyIdentifier=none \
+        -set_serial 0x53a2cb4b124ead837da894b2 \
+        -subj "/CN=selfsigned/OU=testing/O=PolarSSL/C=NL" \
+        -out $@
+all_final += server5-selfsigned.crt
+
 server5-othername.crt: server5.key
 	$(OPENSSL) req -x509 -new -subj "/C=UK/O=Mbed TLS/CN=Mbed TLS othername SAN" -set_serial 77 -config $(test_ca_config_file) -extensions othername_san -days 3650 -sha256 -key $< -out $@
 
diff --git a/tests/data_files/server5-selfsigned.crt b/tests/data_files/server5-selfsigned.crt
index cb55647..0eafe70 100644
--- a/tests/data_files/server5-selfsigned.crt
+++ b/tests/data_files/server5-selfsigned.crt
@@ -1,12 +1,12 @@
 -----BEGIN CERTIFICATE-----
-MIIBzTCCAXKgAwIBAgIMU6LLSxJOrYN9qJSyMAoGCCqGSM49BAMCMEcxEzARBgNV
-BAMTCnNlbGZzaWduZWQxEDAOBgNVBAsTB3Rlc3RpbmcxETAPBgNVBAoTCFBvbGFy
-U1NMMQswCQYDVQQGEwJOTDAiGA8yMDE0MDYxOTExMzY0M1oYDzIwMjQwNjE4MTEz
-NjQzWjBHMRMwEQYDVQQDEwpzZWxmc2lnbmVkMRAwDgYDVQQLEwd0ZXN0aW5nMREw
-DwYDVQQKEwhQb2xhclNTTDELMAkGA1UEBhMCTkwwWTATBgcqhkjOPQIBBggqhkjO
-PQMBBwNCAAQ3zFbZdgkeWnI+x1kt/yBu7nz5BpF00K0UtfdoIllikk7lANgjEf/q
-L9I0XV0WvYqIwmt3DVXNiioO+gHItO3/o0AwPjAMBgNVHRMBAf8EAjAAMA8GA1Ud
-DwEB/wQFAwMHgAAwHQYDVR0OBBYEFLZtURgXjmWq8uzV8wHkbFLCNB1bMAoGCCqG
-SM49BAMCA0kAMEYCIQCf/bzFoge0pCOIrtHrABgc1+Cl9kjlsICpduXhdHUMOwIh
-AOJ+nBHfaEGyF4PRJvn/jMDeIaH1zisinVzC2v+JQOWq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 -----END CERTIFICATE-----