diff --git a/GeoModelTools/GeoModelXML/GMXPlugin/src/GMXPlugin.cxx b/GeoModelTools/GeoModelXML/GMXPlugin/src/GMXPlugin.cxx
index c0f95daf6ce5963bfbcc8641119c70e8235e2b7b..664f7dab3488879ac53ab549853a22502bf53f8f 100644
--- a/GeoModelTools/GeoModelXML/GMXPlugin/src/GMXPlugin.cxx
+++ b/GeoModelTools/GeoModelXML/GMXPlugin/src/GMXPlugin.cxx
@@ -106,9 +106,8 @@ void GMXPlugin::create(GeoPhysVol *world, bool publish)
       	" does not exist. quitting and returning nicely! "<<std::endl;
    	return;
     }
-    processorList proc;
     GmxInterface gmxInterface;
-    Gmx2Geo gmx2Geo(f, world, gmxInterface,proc, 0 , matman);
+    Gmx2Geo gmx2Geo(f, world, gmxInterface, 0 , matman);
   }
 
   if (matman) MaterialManager::getManager()->printAll();
diff --git a/GeoModelTools/GeoModelXML/GeoModelXml/GeoModelXml/Gmx2Geo.h b/GeoModelTools/GeoModelXML/GeoModelXml/GeoModelXml/Gmx2Geo.h
index d21e26d8ef4966c3d23ad48f32470c77b2379878..b2f6715115c4ebadeb5d3068d00180847c02e985 100644
--- a/GeoModelTools/GeoModelXML/GeoModelXml/GeoModelXml/Gmx2Geo.h
+++ b/GeoModelTools/GeoModelXML/GeoModelXml/GeoModelXml/Gmx2Geo.h
@@ -58,7 +58,7 @@ class Evaluator;
 
 class Gmx2Geo {
 public:
-    Gmx2Geo(const std::string gmxFile, GeoPhysVol *addHere, GmxInterface &gmxInterface, processorList& procs ,unsigned int flags = 0, bool useMatManager = 0);
+    Gmx2Geo(const std::string gmxFile, GeoPhysVol *addHere, GmxInterface &gmxInterface, unsigned int flags = 0, bool useMatManager = 0,const processorList& procs=processorList());
 private:
 // Disallow copying
     Gmx2Geo(const Gmx2Geo &right);
diff --git a/GeoModelTools/GeoModelXML/GeoModelXml/src/Gmx2Geo.cxx b/GeoModelTools/GeoModelXML/GeoModelXml/src/Gmx2Geo.cxx
index 355ba25482a089d7ed3184f64da6d83140082268..d9683891e1fbcbbce02a03e022887ae4eb46fb37 100644
--- a/GeoModelTools/GeoModelXML/GeoModelXml/src/Gmx2Geo.cxx
+++ b/GeoModelTools/GeoModelXML/GeoModelXml/src/Gmx2Geo.cxx
@@ -30,7 +30,7 @@
 using namespace std;
 using namespace xercesc;
 
-Gmx2Geo::Gmx2Geo(const string xmlFile, GeoPhysVol *addHere, GmxInterface &gmxInterface, processorList& procs, unsigned int flags, bool useMatManager) {
+Gmx2Geo::Gmx2Geo(const string xmlFile, GeoPhysVol *addHere, GmxInterface &gmxInterface, unsigned int flags, bool useMatManager, const processorList& procs) {
 //
 //    Create the xml tree (DOMDocument)
 //