diff --git a/core/experience.py b/core/experience.py
index 795cccb..cd4e343 100644
--- a/core/experience.py
+++ b/core/experience.py
@@ -1,7 +1,7 @@
 from .parameter import ExperienceParameter
 from mpMultiInterfaceTopo import MpMultiInterfaceTopo
 
-class Experience:
+class Experience(object):
     PING = "ping"
     NCPV = "ncpv"
     NC = "nc"
diff --git a/core/parameter.py b/core/parameter.py
index 36721a8..58d4654 100644
--- a/core/parameter.py
+++ b/core/parameter.py
@@ -1,5 +1,5 @@
 
-class Parameter:
+class Parameter(object):
 	def __init__(self, paramFile):
 		self.paramDic = {}
 		print("Create the param Object")
@@ -208,10 +208,10 @@ class ExperienceParameter(Parameter):
     defaultValue[BACKUPPATH1] = "0"
 
     def __init__(self, paramFile):
-        super().__init__(paramFile)
+        super(ExperienceParameter, self).__init__(paramFile)
 
     def getParam(self, key):
-        val = super().getParam(key)
+        val = super(ExperienceParameter, self).getParam(key)
         if val is None:
             if key in ExperienceParameter.defaultValue:
                 return ExperienceParameter.defaultValue[key]
diff --git a/core/topo.py b/core/topo.py
index 44fbb41..46934ea 100644
--- a/core/topo.py
+++ b/core/topo.py
@@ -89,7 +89,7 @@ class TopoParameter(Parameter):
 		s = s + self.linkCharacteristics[-1].__str__()
 		return s
 
-class Topo:
+class Topo(object):
 	mininetBuilder = "mininet"
 	multiIfTopo = "MultiIf"
 	ECMPLikeTopo = "ECMPLike"
@@ -149,7 +149,7 @@ class Topo:
 		self.topoBuilder.stopNetwork()
 
 
-class TopoConfig:
+class TopoConfig(object):
 
     PING_OUTPUT = "ping.log"
 
diff --git a/mpECMPSingleInterfaceConfig.py b/mpECMPSingleInterfaceConfig.py
index 54e9cd5..dbb4860 100644
--- a/mpECMPSingleInterfaceConfig.py
+++ b/mpECMPSingleInterfaceConfig.py
@@ -4,7 +4,7 @@ from struct import *
 
 class MpECMPSingleInterfaceConfig(TopoConfig):
     def __init__(self, topo, param):
-        super().__init__(topo, param)
+        super(MpECMPSingleInterfaceConfig, self).__init__(topo, param)
 
     def configureRoute(self):
         i = 0
diff --git a/mpECMPSingleInterfaceTopo.py b/mpECMPSingleInterfaceTopo.py
index 8da7df8..7b7b33f 100644
--- a/mpECMPSingleInterfaceTopo.py
+++ b/mpECMPSingleInterfaceTopo.py
@@ -2,7 +2,7 @@ from core.topo import Topo
 
 class MpECMPSingleInterfaceTopo(Topo):
     def __init__(self, topoBuilder, parameterFile):
-        super().__init__(topoBuilder, parameterFile)
+        super(MpECMPSingleInterfaceTopo, self).__init__(topoBuilder, parameterFile)
 
         print("Hello ECMP topo")
 
diff --git a/mpMultiInterfaceConfig.py b/mpMultiInterfaceConfig.py
index 101c277..e0d04f9 100644
--- a/mpMultiInterfaceConfig.py
+++ b/mpMultiInterfaceConfig.py
@@ -3,7 +3,7 @@ from mpMultiInterfaceTopo import MpMultiInterfaceTopo
 
 class MpMultiInterfaceConfig(TopoConfig):
     def __init__(self, topo, param):
-        super().__init__(topo, param)
+        super(MpMultiInterfaceConfig, self).__init__(topo, param)
 
     def configureRoute(self):
         i = 0
diff --git a/mpMultiInterfaceCongConfig.py b/mpMultiInterfaceCongConfig.py
index e29cbad..925afd3 100644
--- a/mpMultiInterfaceCongConfig.py
+++ b/mpMultiInterfaceCongConfig.py
@@ -3,7 +3,7 @@ from core.topo import TopoConfig, Topo, TopoParameter
 
 class MpMultiInterfaceCongConfig(TopoConfig):
     def __init__(self, topo, param):
-        super().__init__(topo, param)
+        super(MpMultiInterfaceCongConfig, self).__init__(topo, param)
 
     def configureRoute(self):
         i = 0
diff --git a/mpMultiInterfaceCongTopo.py b/mpMultiInterfaceCongTopo.py
index 3aa8992..aa45ef5 100644
--- a/mpMultiInterfaceCongTopo.py
+++ b/mpMultiInterfaceCongTopo.py
@@ -5,7 +5,7 @@ class MpMultiInterfaceCongTopo(Topo):
     congServerName = "CSer"
 
     def __init__(self, topoBuilder, parameterFile):
-        super().__init__(topoBuilder, parameterFile)
+        super(MpMultiInterfaceCongTopo, self).__init__(topoBuilder, parameterFile)
         print("Hello from topo multi if")
         self.client = self.addHost(Topo.clientName)
         self.server = self.addHost(Topo.serverName)
diff --git a/mpMultiInterfaceTopo.py b/mpMultiInterfaceTopo.py
index 9f8735d..152d818 100644
--- a/mpMultiInterfaceTopo.py
+++ b/mpMultiInterfaceTopo.py
@@ -2,7 +2,7 @@ from core.topo import Topo
 
 class MpMultiInterfaceTopo(Topo):
     def __init__(self, topoBuilder, parameterFile):
-        super().__init__(topoBuilder, parameterFile)
+        super(MpMultiInterfaceTopo, self).__init__(topoBuilder, parameterFile)
         print("Hello from topo multi if")
         self.client = self.addHost(Topo.clientName)
         self.server = self.addHost(Topo.serverName)
diff --git a/mpTwoInterfaceCongestionConfig.py b/mpTwoInterfaceCongestionConfig.py
index 5863938..3bdc59b 100644
--- a/mpTwoInterfaceCongestionConfig.py
+++ b/mpTwoInterfaceCongestionConfig.py
@@ -3,7 +3,7 @@ from mpTwoInterfaceCongestionTopo import MpTwoInterfaceCongestionTopo
 
 class MpTwoInterfaceCongestionConfig(TopoConfig):
     def __init__(self, topo, param):
-        super().__init__(topo, param)
+        super(MpTwoInterfaceCongestionConfig, self).__init__(topo, param)
 
     def configureRoute(self):
         # Client - Router
diff --git a/mpTwoInterfaceCongestionTopo.py b/mpTwoInterfaceCongestionTopo.py
index 988bf36..53778ce 100644
--- a/mpTwoInterfaceCongestionTopo.py
+++ b/mpTwoInterfaceCongestionTopo.py
@@ -2,7 +2,7 @@ from core.topo import Topo
 
 class MpTwoInterfaceCongestionTopo(Topo):
     def __init__(self, topoBuilder, parameterFile):
-        super().__init__(topoBuilder, parameterFile)
+        super(MpTwoInterfaceCongestionTopo, self).__init__(topoBuilder, parameterFile)
 
         print("Hello from topo two ifs cong")
         print("Expected topo:")