diff --git a/testing/tests/ikev2/default-keys/hosts/carol/etc/strongswan.conf b/testing/tests/ikev2/default-keys/hosts/carol/etc/strongswan.conf
index c6de72adb..c466dc8cf 100644
--- a/testing/tests/ikev2/default-keys/hosts/carol/etc/strongswan.conf
+++ b/testing/tests/ikev2/default-keys/hosts/carol/etc/strongswan.conf
@@ -5,5 +5,5 @@ charon {
 }
 
 scepclient {
-  load = sha1 sha2 md5 aes des hmac pem pkcs1 gmp random
+  load = sha1 sha2 md5 aes des hmac pem pkcs1 x509 gmp random
 }
diff --git a/testing/tests/ikev2/default-keys/hosts/moon/etc/strongswan.conf b/testing/tests/ikev2/default-keys/hosts/moon/etc/strongswan.conf
index c6de72adb..c466dc8cf 100644
--- a/testing/tests/ikev2/default-keys/hosts/moon/etc/strongswan.conf
+++ b/testing/tests/ikev2/default-keys/hosts/moon/etc/strongswan.conf
@@ -5,5 +5,5 @@ charon {
 }
 
 scepclient {
-  load = sha1 sha2 md5 aes des hmac pem pkcs1 gmp random
+  load = sha1 sha2 md5 aes des hmac pem pkcs1 x509 gmp random
 }