diff --git a/src/plugins/score-lib-process/Process/Dataflow/PortItem.cpp b/src/plugins/score-lib-process/Process/Dataflow/PortItem.cpp
index 9a3993e128..3ed1c86e60 100644
--- a/src/plugins/score-lib-process/Process/Dataflow/PortItem.cpp
+++ b/src/plugins/score-lib-process/Process/Dataflow/PortItem.cpp
@@ -11,6 +11,8 @@
 #include <score/model/path/PathSerialization.hpp>
 #include <score/selection/SelectionDispatcher.hpp>
 #include <score/tools/Bind.hpp>
+#include <State/MessageListSerialization.hpp>
+#include <Device/Node/NodeListMimeSerialization.hpp>
 
 #include <ossia/detail/algorithms.hpp>
 
@@ -674,6 +676,16 @@ void PortItem::dragEnterEvent(QGraphicsSceneDragDropEvent* event)
       update();
     }
   }
+  else
+  {
+    auto fmt = event->mimeData()->formats();
+    if(fmt.contains(score::mime::messagelist()) || fmt.contains(score::mime::nodelist()))
+    {
+      prepareGeometryChange();
+      m_diam = 12.;
+      update();
+    }
+  }
   event->accept();
 }