diff --git a/slapos/recipe/erp5testnode/SlapOSControler.py b/slapos/recipe/erp5testnode/SlapOSControler.py
index 9cc604d00b1e877de50cd6c24457e44093fdbf68..e48e3070aa9506fbcfbf27471df9e124e41d9d52 100644
--- a/slapos/recipe/erp5testnode/SlapOSControler.py
+++ b/slapos/recipe/erp5testnode/SlapOSControler.py
@@ -54,6 +54,7 @@ class SlapOSControler(object):
     stdout = open(os.path.join(
                   config['instance_root'],'.runSoftwareRelease_out'),
                   'w+')
+    stdout.write("SlapOSControler.runSoftwareRelease")
     stderr = open(os.path.join(
                   config['instance_root'],'.runSoftwareRelease_err'),
                   'w+')