diff --git a/runbot/runbot.py b/runbot/runbot.py
index 05873b90..51d8bbb0 100644
--- a/runbot/runbot.py
+++ b/runbot/runbot.py
@@ -703,7 +703,7 @@ class runbot_build(osv.osv):
 
         return cmd, modules
 
-    def spawn(self, cmd, lock_path, log_path, cpu_limit=None, shell=False, showstderr=False):
+    def spawn(self, cmd, lock_path, log_path, cpu_limit=None, shell=False):
         def preexec_fn():
             os.setsid()
             if cpu_limit:
@@ -717,11 +717,7 @@ class runbot_build(osv.osv):
             lock(lock_path)
         out=open(log_path,"w")
         _logger.debug("spawn: %s stdout: %s", ' '.join(cmd), log_path)
-        if showstderr:
-            stderr = out
-        else:
-            stderr = open(os.devnull, 'w')
-        p=subprocess.Popen(cmd, stdout=out, stderr=stderr, preexec_fn=preexec_fn, shell=shell)
+        p=subprocess.Popen(cmd, stdout=out, stderr=out, preexec_fn=preexec_fn, shell=shell)
         return p.pid
 
     def github_status(self, cr, uid, ids, context=None):
@@ -829,7 +825,7 @@ class runbot_build(osv.osv):
         #    f.close()
         #cmd=[self.client_web_bin_path]
 
-        return self.spawn(cmd, lock_path, log_path, cpu_limit=None, showstderr=True)
+        return self.spawn(cmd, lock_path, log_path, cpu_limit=None)
 
     def force(self, cr, uid, ids, context=None):
         """Force a rebuild"""