diff --git a/include/boost/exception/exception.hpp b/include/boost/exception/exception.hpp
index ebf3c1d..562f745 100644
--- a/include/boost/exception/exception.hpp
+++ b/include/boost/exception/exception.hpp
@@ -136,7 +136,7 @@ boost
 
     class exception;
 
-    template <class>
+    template <class T>
     class shared_ptr;
 
     namespace