diff --git a/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/data_writer_task.h b/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/data_writer_task.h
index 0fde2075e..520799508 100755
--- a/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/data_writer_task.h
+++ b/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/data_writer_task.h
@@ -37,7 +37,7 @@ public:
   void writeSamples();
 #else
   // Stub methods when BUILD_RTI is disabled
-  void enqueue(SampleWriterInterface* /*swi*/) override {}
+  void enqueue(SampleWriterInterface* /*swi*/) {}
   void shutdown() {}
   bool waitForData() { return false; }
   SampleWriterInterface* getNextSampleWriter() { return nullptr; }
diff --git a/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/session_handler.h b/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/session_handler.h
index 4758a71d8..6eefe3cec 100755
--- a/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/session_handler.h
+++ b/qt6-after/qt6-migrated-legatus/Lts/Services/RoutingServiceNG/session_handler.h
@@ -14,7 +14,10 @@
 #include "rsccommon_export.h"
 #include "logger.h"
 #include "session.h"
+
+#if BUILD_RTI
 #include <DDS/DDSConnector/dds_connector.h>
+#endif
 
 namespace LtsPluginManager
 {