diff --git a/src/security/pib/pib-memory.cpp b/src/security/pib/pib-memory.cpp
index aa93ba7..2d6aa7d 100644
--- a/src/security/pib/pib-memory.cpp
+++ b/src/security/pib/pib-memory.cpp
@@ -27,11 +27,18 @@
 namespace security {
 namespace pib {
 
-PibMemory::PibMemory()
+PibMemory::PibMemory(const std::string&)
   : m_hasDefaultIdentity(false)
 {
 }
 
+const std::string&
+PibMemory::getScheme()
+{
+  static std::string scheme = "pib-memory";
+  return scheme;
+}
+
 void
 PibMemory::setTpmLocator(const std::string& tpmLocator)
 {