diff --git a/wkd-test-suite/src/main/java/pgp/wkd/test_suite/WkdDirectoryStructure.java b/wkd-test-suite/src/main/java/pgp/wkd/test_suite/WkdDirectoryStructure.java
index 5e09fa2..f622724 100644
--- a/wkd-test-suite/src/main/java/pgp/wkd/test_suite/WkdDirectoryStructure.java
+++ b/wkd-test-suite/src/main/java/pgp/wkd/test_suite/WkdDirectoryStructure.java
@@ -25,8 +25,6 @@ public abstract class WkdDirectoryStructure {
         openpgpkey = new File(wellKnown, "openpgpkey");
     }
 
-    public abstract File getHu();
-
     public abstract Path getRelativeCertificatePath(String mailAddress);
 
     public abstract void mkdirs() throws IOException;
@@ -64,17 +62,12 @@ public abstract class WkdDirectoryStructure {
             this.policy = new File(openpgpkey, "policy");
         }
 
-        @Override
-        public File getHu() {
-            return hu;
-        }
-
         @Override
         public Path getRelativeCertificatePath(String mailAddress) {
             WKDAddress address = WKDAddress.fromEmail(mailAddress);
             String path = address.getDirectMethodURI().getPath();
             String fileName = path.substring(path.lastIndexOf('/') + 1);
-            return rootDir.toPath().relativize(new File(getHu(), fileName).toPath());
+            return rootDir.toPath().relativize(new File(hu, fileName).toPath());
         }
 
         @Override
@@ -111,17 +104,12 @@ public abstract class WkdDirectoryStructure {
             this.policy = new File(domainFile, "policy");
         }
 
-        @Override
-        public File getHu() {
-            return hu;
-        }
-
         @Override
         public Path getRelativeCertificatePath(String mailAddress) {
             WKDAddress address = WKDAddress.fromEmail(mailAddress);
             String path = address.getAdvancedMethodURI().getPath();
             String fileName = path.substring(path.lastIndexOf('/') + 1);
-            return rootDir.toPath().relativize(new File(getHu(), fileName).toPath());
+            return rootDir.toPath().relativize(new File(hu, fileName).toPath());
         }
 
         @Override