diff --git a/detail/actions.cpp b/detail/actions.cpp
index e2a2485..47b147e 100644
--- a/detail/actions.cpp
+++ b/detail/actions.cpp
@@ -25,6 +25,9 @@
 
 namespace quickbook
 {
+    char const* quickbook_get_date = "__quickbook_get_date__";
+    char const* quickbook_get_time = "__quickbook_get_time__";
+
     namespace {
         std::string fully_qualified_id(std::string const& library_id,
             std::string const& qualified_section_id,
diff --git a/detail/actions.hpp b/detail/actions.hpp
index a4430c8..d6546fe 100644
--- a/detail/actions.hpp
+++ b/detail/actions.hpp
@@ -286,11 +286,8 @@ namespace quickbook
         collector& out;
     };
 
-    namespace
-    {
-        char const* quickbook_get_date = "__quickbook_get_date__";
-        char const* quickbook_get_time = "__quickbook_get_time__";
-    }
+    extern char const* quickbook_get_date;
+    extern char const* quickbook_get_time;
 
     struct do_macro_action
     {