diff --git a/v2/test/boostbook/a.hpp b/v2/test/boostbook/a.hpp
index 6375c0a82..8d7ac1b24 100644
--- a/v2/test/boostbook/a.hpp
+++ b/v2/test/boostbook/a.hpp
@@ -1,7 +1,12 @@
 
+// Seems like Boostbook does like classes outside of namespaces,
+// and won't generate anything for them.
+namespace boost {
+
 /// A class
 class A {
 public:
     /// A constructor
     A();    
 };
+}
\ No newline at end of file