diff --git a/python/2013_coursens/p105_demo.py b/python/2013_coursens/p105_demo.py
index e7f5952d427c2b81c2eaa35b71f2c2cac290f9d7..77678907fd896f80b7fdbb04dd5f477e5c1d9204 100644
--- a/python/2013_coursens/p105_demo.py
+++ b/python/2013_coursens/p105_demo.py
@@ -2,10 +2,7 @@
 # ******************************************************************************
 # ______________________________________________________________________________
 # ******************************************************************************
-import sys
-execfile('/home/nmansard/.pythonrc')
 
-sys.path.append('..')
 from dynamic_graph import plug
 from dynamic_graph.sot.core import *
 from dynamic_graph.sot.core.math_small_entities import Derivator_of_Matrix
diff --git a/python/2013_coursens/p105_walk.py b/python/2013_coursens/p105_walk.py
index e139e7a57bfddf7c505ce56c9f7b3aa8ebe89138..e338bab529089f6f6a78991db247892b3e0d02c3 100644
--- a/python/2013_coursens/p105_walk.py
+++ b/python/2013_coursens/p105_walk.py
@@ -3,7 +3,6 @@
 # ______________________________________________________________________________
 # ******************************************************************************
 
-sys.path.append('..')
 from dynamic_graph import plug
 from dynamic_graph.sot.core import *
 from dynamic_graph.sot.core.math_small_entities import Derivator_of_Matrix
@@ -21,7 +20,7 @@ from dynamic_graph.sot.core.utils.viewer_helper import addRobotViewer,VisualPing
 from dynamic_graph.sot.core.utils.attime import attime,ALWAYS,refset,sigset
 from numpy import *
 
-from history import History
+from dynamic_graph.sot.core.utils.history import History
 
 from dynamic_graph.sot.dyninv.robot_specific import pkgDataRootDir,modelName,robotDimension,initialConfig,gearRatio,inertiaRotor
 
diff --git a/python/2013_coursens/p124_sing.py b/python/2013_coursens/p124_sing.py
index 625c5f772fd17e65aa7e51ab7e9052678b23ea89..155ef36568c0c55fcfe143df3571dc3c8ff3a4c2 100644
--- a/python/2013_coursens/p124_sing.py
+++ b/python/2013_coursens/p124_sing.py
@@ -2,10 +2,7 @@
 # ******************************************************************************
 # ______________________________________________________________________________
 # ******************************************************************************
-import sys
-execfile('/home/nmansard/.pythonrc')
 
-sys.path.append('..')
 from dynamic_graph import plug
 from dynamic_graph.sot.core import *
 from dynamic_graph.sot.core.math_small_entities import Derivator_of_Matrix
diff --git a/python/2013_coursens/p96_sing.py b/python/2013_coursens/p96_sing.py
index 4c9aaf6fdb9d1fe97af39359d11f6a55ce90702b..5e8bd4bf9a54a02539a72928b458b5203ceaabb7 100644
--- a/python/2013_coursens/p96_sing.py
+++ b/python/2013_coursens/p96_sing.py
@@ -2,10 +2,7 @@
 # ******************************************************************************
 # ______________________________________________________________________________
 # ******************************************************************************
-import sys
-execfile('/home/nmansard/.pythonrc')
 
-sys.path.append('..')
 from dynamic_graph import plug
 from dynamic_graph.sot.core import *
 from dynamic_graph.sot.core.math_small_entities import Derivator_of_Matrix