diff --git a/include/boost/asio/detail/service_registry.hpp b/include/boost/asio/detail/service_registry.hpp
index 447fc910af..5d54d1b60d 100644
--- a/include/boost/asio/detail/service_registry.hpp
+++ b/include/boost/asio/detail/service_registry.hpp
@@ -111,7 +111,7 @@ class service_registry
 
   // Factory function for creating a service instance.
   template <typename Service, typename Owner>
-  static execution_context::service* create(void* owner);
+  BOOST_ASIO_DECL static execution_context::service* create(void* owner);
 
   // Destroy a service instance.
   BOOST_ASIO_DECL static void destroy(execution_context::service* service);