diff --git a/src/security/sec-tpm-osx.cpp b/src/security/sec-tpm-osx.cpp
index 3064d84..9f722fd 100644
--- a/src/security/sec-tpm-osx.cpp
+++ b/src/security/sec-tpm-osx.cpp
@@ -868,7 +868,7 @@
   if (signature.get() == 0)
     throw Error("Signature is NULL!\n");
 
-  return Block(Tlv::SignatureValue,
+  return Block(tlv::SignatureValue,
                make_shared<Buffer>(CFDataGetBytePtr(signature.get()),
                                    CFDataGetLength(signature.get())));
 }