diff --git a/stratus1/src/stratus/st_instance.py b/stratus1/src/stratus/st_instance.py
index 93affe27..9c6a0928 100644
--- a/stratus1/src/stratus/st_instance.py
+++ b/stratus1/src/stratus/st_instance.py
@@ -346,7 +346,7 @@ class Inst :
     # Not for vdd/vss in case of utilisation of SetGlobal
     # The detection is done with vst driver in this case ...
     for plug in self._hur_instance.getUnconnectedPlugs():
-      if plug.getMasterNet().getType() not in ( TypePOWER, TypeGROUND ) :
+      if plug.getMasterNet().getType() not in ( Net.Type.POWER, Net.Type.GROUND ) :
         name = str(plug.getMasterNet().getName())
         chaine = re.search ( "(.*)\(", name )
         if chaine : name = chaine.group(1)
diff --git a/stratus1/src/stratus/st_model.py b/stratus1/src/stratus/st_model.py
index f4fc20de..32476d82 100644
--- a/stratus1/src/stratus/st_model.py
+++ b/stratus1/src/stratus/st_model.py
@@ -274,7 +274,7 @@ class Model :
         direction = net.getDirection()
         name      = str(net.getName())
 
-        if net.getType() in ( TypePOWER, TypeGROUND, TypeCLOCK ) :
+        if net.getType() in ( Net.Type.POWER, Net.Type.GROUND, Net.Type.CLOCK ) :
           found = True
           continue
           
@@ -1199,7 +1199,7 @@ class Model :
         if plug_de_inst.getMasterNet().getDirection() == DirectionIN :
           # ignore vdd and vss
           type = plug_de_inst.getNet().getType()
-          if type not in ( TypePOWER, TypeGROUND ) : net_entree_inst.append ( plug_de_inst.getNet() )
+          if type not in ( Net.Type.POWER, Net.Type.GROUND ) : net_entree_inst.append ( plug_de_inst.getNet() )
 
       ### Deletion of te instance ###
       # If the instance has only one output