diff --git a/erp5/util/testnode/ScalabilityTestRunner.py b/erp5/util/testnode/ScalabilityTestRunner.py
index 40410429a1b2f68cfa84d4eb217fe771c3883f7e..975071eee450190b7e08062a135cebffeaec8a3f 100644
--- a/erp5/util/testnode/ScalabilityTestRunner.py
+++ b/erp5/util/testnode/ScalabilityTestRunner.py
@@ -128,6 +128,7 @@ class ScalabilityTestRunner():
     # Use *.host.vifib.net frontend
     self.frontend_software = 'http://git.erp5.org/gitweb/slapos.git/blob_plain/HEAD:/software/apache-frontend/software.cfg'
     self.frontend_instance_guid = 'SOFTINST-9238'
+    self.exec_env = os.environ.copy()
     
   def _prepareSlapOS(self, software_path, computer_guid, create_partition=0, state="available"):
     # create_partition is kept for compatibility