diff --git a/src/main/java/CredentialRepository.java b/src/main/java/CredentialRepository.java
index 4c04418..3406ceb 100644
--- a/src/main/java/CredentialRepository.java
+++ b/src/main/java/CredentialRepository.java
@@ -138,6 +138,16 @@ public class CredentialRepository implements CredentialRepositoryInterface{
         return this.credentials.size();
     }
 
+    /**
+     * Helper function for serialization
+      * @return
+     */
+
+    private String getWorkingDirectory()
+    {
+        return System.getProperty("user.dir");
+    }
+
 }