diff --git a/src/endorse-extension.cpp b/src/endorse-extension.cpp
index ac862ac..0c9f6c4 100644
--- a/src/endorse-extension.cpp
+++ b/src/endorse-extension.cpp
@@ -23,7 +23,7 @@
   this->wireDecode(endorseWire);
 }
 
-template<bool T>
+template<ndn::encoding::Tag T>
 size_t
 EndorseExtension::wireEncode(ndn::EncodingImpl<T>& block) const
 {