diff --git a/scene/elementInOut.cc b/scene/elementInOut.cc
index 3dd1a79e231cdcc8d5e013071d90ffa58dde83c5..9a089236a80d0e662ab35135dee293320b888775 100644
--- a/scene/elementInOut.cc
+++ b/scene/elementInOut.cc
@@ -52,6 +52,8 @@
 #include "../parser/element.hh"
 #include "../parser/context.hh"
 
+#include <iostream>
+
 //== NAMESPACES ===============================================================
 namespace VSI {
 
@@ -88,6 +90,17 @@ ElementInOut::ElementInOut (InOut *_io, SceneElement *_parent):
   descText_->setHorizontalStretch (true);
 }
 
+
+ElementInOut::ElementInOut(const ElementInOut& _orig) :
+  io_(NULL),
+  element_(NULL),
+  conn_(NULL),
+  typeText_(NULL),
+  descText_(NULL)
+{
+  std::cerr << "Illegal use of copy constructor in class ElementInOut, which is not implemented yet!" << std::endl;
+};
+
 //------------------------------------------------------------------------------
 
 /// Destructor
diff --git a/scene/elementInOut.hh b/scene/elementInOut.hh
index 9386e1e199bd25d957fedb16413776640e5eafbf..253f331d4c1c339d213b800c5dacdcf98eb59d31 100644
--- a/scene/elementInOut.hh
+++ b/scene/elementInOut.hh
@@ -106,12 +106,16 @@ class ElementInOut {
     bool validConnection (ElementInOut *_e);
 
     /// InOut context object
-    InOut *inOut () const { return io_; };
+    InOut* inOut () const { return io_; };
 
     /// Scene element
-    SceneElement *element () { return element_; };
+    SceneElement* element() { return element_; };
 
   private:
+
+    /// Private copy constructor to avoid accidental copy
+    ElementInOut( const ElementInOut& _orig );
+
     InOut *io_;
     SceneElement *element_;
 
@@ -126,4 +130,4 @@ class ElementInOut {
 }
 //=============================================================================
 
-#endif
\ No newline at end of file
+#endif