diff --git a/src/security/key-chain.cpp b/src/security/key-chain.cpp
index 67cdda6..18051c1 100644
--- a/src/security/key-chain.cpp
+++ b/src/security/key-chain.cpp
@@ -116,7 +116,7 @@
   if (keyName.size() < 1)
     return shared_ptr<IdentityCertificate>();
 
-  std::string keyIdPrefix = keyName.get(-1).toEscapedString().substr(0, 4);
+  std::string keyIdPrefix = keyName.get(-1).toUri().substr(0, 4);
   if (keyIdPrefix != "ksk-" && keyIdPrefix != "dsk-")
     return shared_ptr<IdentityCertificate>();