diff --git a/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_cosmics_configuration.py b/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_cosmics_configuration.py
index c1648c11b13c213caf38da38b24b50802482655c..726f9a401adeeb5ccafc106ea1cb671484b2fefc 100755
--- a/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_cosmics_configuration.py
+++ b/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_cosmics_configuration.py
@@ -3,6 +3,7 @@
 import pickle
 import subprocess
 import unittest
+import os
 
 
 class TestAtlasG4Cosmics(unittest.TestCase):
@@ -364,4 +365,8 @@ class TestAtlasG4Cosmics(unittest.TestCase):
 
 
 if __name__ == '__main__':
+    dirname = 'cosmics_config_test'
+    os.system ('rm -rf ' + dirname)
+    os.mkdir (dirname)
+    os.chdir (dirname)
     unittest.main()
diff --git a/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_tf_configuration.py b/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_tf_configuration.py
index 1d88c2bff9a18813fc1f90748ade7b506e361751..3a4cc1d871e76deb0c974fa2ce20b08611bb1076 100755
--- a/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_tf_configuration.py
+++ b/Simulation/G4Atlas/G4AtlasApps/test/test_AtlasG4_tf_configuration.py
@@ -3,6 +3,7 @@
 import pickle
 import subprocess
 import unittest
+import os
 
 
 class TestAtlasG4(unittest.TestCase):
@@ -281,4 +282,8 @@ class TestAtlasG4(unittest.TestCase):
 
 
 if __name__ == '__main__':
+    dirname = 'tf_config_test'
+    os.system ('rm -rf ' + dirname)
+    os.mkdir (dirname)
+    os.chdir (dirname)
     unittest.main()
diff --git a/Simulation/G4Atlas/G4AtlasApps/test/test_TestBeam_tf_configuration.py b/Simulation/G4Atlas/G4AtlasApps/test/test_TestBeam_tf_configuration.py
index 293e70a1d46403894e5cf3c713de188eeaa0774e..a13bfdc644d6e73198a3fae5e677753520f3506e 100755
--- a/Simulation/G4Atlas/G4AtlasApps/test/test_TestBeam_tf_configuration.py
+++ b/Simulation/G4Atlas/G4AtlasApps/test/test_TestBeam_tf_configuration.py
@@ -3,6 +3,7 @@
 import pickle
 import subprocess
 import unittest
+import os
 
 
 class TestTestBeam(unittest.TestCase):
@@ -294,4 +295,8 @@ class TestTestBeam(unittest.TestCase):
 
 
 if __name__ == '__main__':
+    dirname = 'TestBeam_tf_config_test'
+    os.system ('rm -rf ' + dirname)
+    os.mkdir (dirname)
+    os.chdir (dirname)
     unittest.main()