diff --git a/ddspipe_core/include/ddspipe_core/dynamic/AllowedTopicList.hpp b/ddspipe_core/include/ddspipe_core/dynamic/AllowedTopicList.hpp
index 84220ecf..cab9e591 100644
--- a/ddspipe_core/include/ddspipe_core/dynamic/AllowedTopicList.hpp
+++ b/ddspipe_core/include/ddspipe_core/dynamic/AllowedTopicList.hpp
@@ -134,12 +134,14 @@ class AllowedTopicList
     mutable std::recursive_mutex mutex_;
 
     // Allow operator << to use private variables
+    DDSPIPE_CORE_DllAPI
     friend std::ostream& operator <<(
             std::ostream&,
             const AllowedTopicList&);
 };
 
 //! \c AllowedTopicList to stream serializator
+DDSPIPE_CORE_DllAPI
 std::ostream& operator <<(
         std::ostream& os,
         const AllowedTopicList& atl);
diff --git a/ddspipe_participants/include/ddspipe_participants/xml/XmlHandler.hpp b/ddspipe_participants/include/ddspipe_participants/xml/XmlHandler.hpp
index 09c4724c..16259580 100644
--- a/ddspipe_participants/include/ddspipe_participants/xml/XmlHandler.hpp
+++ b/ddspipe_participants/include/ddspipe_participants/xml/XmlHandler.hpp
@@ -30,6 +30,7 @@ class XmlHandler
 {
 public:
 
+    DDSPIPE_PARTICIPANTS_DllAPI
     static utils::ReturnCode load_xml(
             const XmlHandlerConfiguration& configuration);