diff --git a/src/main/java/foundation/privacybydesign/email/EmailConfiguration.java b/src/main/java/foundation/privacybydesign/email/EmailConfiguration.java
index 4b17703..a2c6ca9 100644
--- a/src/main/java/foundation/privacybydesign/email/EmailConfiguration.java
+++ b/src/main/java/foundation/privacybydesign/email/EmailConfiguration.java
@@ -31,6 +31,7 @@ public class EmailConfiguration extends BaseConfiguration<EmailConfiguration> {
     private String mail_from_address = "";
     private boolean mail_starttls_required = true;
     private String secret_key = "";
+    private String private_key_path = "sk.der";
     private long token_validity = 0;
     private String server_name = "";
     private String human_readable_name = "";
@@ -73,7 +74,7 @@ public String getVerifyEmailBody(String language) {
     }
 
     public PrivateKey getPrivateKey() throws KeyManagementException {
-        return BaseConfiguration.getPrivateKey("sk.der");
+        return BaseConfiguration.getPrivateKey(private_key_path);
     }
 
     public String getMailHost() { return mail_host; }
diff --git a/src/main/resources/config.sample.json b/src/main/resources/config.sample.json
index a0a61ff..412c7be 100644
--- a/src/main/resources/config.sample.json
+++ b/src/main/resources/config.sample.json
@@ -4,8 +4,8 @@
     "nl": "Voeg e-mailadres toe aan je Yivi-app"
   },
   "server_url": {
-    "en": "http://localhost:8080",
-    "nl": "http://localhost:8080"
+    "en": "http://localhost:8080/en/",
+    "nl": "http://localhost:8080/nl/"
   },
   "mail_host": "mailhog.localhost",
   "mail_port": 1025,