diff --git a/management/univention-management-console/conffiles/setup_saml_sp.py b/management/univention-management-console/conffiles/setup_saml_sp.py
index e7b17cd999..d20a88e355 100644
--- a/management/univention-management-console/conffiles/setup_saml_sp.py
+++ b/management/univention-management-console/conffiles/setup_saml_sp.py
@@ -33,7 +33,7 @@
 
 import os
 from glob import glob
-from subprocess import call
+from subprocess import call, Popen
 from time import sleep
 from urlparse import urlparse
 from defusedxml import ElementTree
@@ -86,18 +86,20 @@ def download_idp_metadata(metadata):
 	filename = '/usr/share/univention-management-console/saml/idp/%s.xml' % (idp,)
 	for i in range(0, 60):
 		print 'Try to download idp metadata (%s/60)' % (i + 1)
-		rc = call([
+		p = Popen([
 			'/usr/bin/curl',
 			'--fail',
 			'--cacert', '/etc/univention/ssl/ucsCA/CAcert.pem',
 			'-o', filename,
 			metadata,
-		])
-		if rc and os.path.exists(filename):
+		], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True)
+		stdout, stderr = p.communicate()
+		if p.returncode and os.path.exists(filename):
 			os.remove(filename)
-		if rc == 0:
+		if p.returncode == 0:
 			return True
 		sleep(1)
+	print stdout
 	return False