diff --git a/src/Transports/UDP/Task.cpp b/src/Transports/UDP/Task.cpp
index ade769fd26..0f054dac52 100644
--- a/src/Transports/UDP/Task.cpp
+++ b/src/Transports/UDP/Task.cpp
@@ -324,6 +324,9 @@ namespace Transports
       void
       consume(const IMC::Message* msg)
       {
+        if (msg->getSource() != getSystemId())
+          return;
+
         if (m_lcomms->isActive())
         {
           if (msg->getId() == DUNE_IMC_ESTIMATEDSTATE)