diff --git a/tests/test_postfix.py b/tests/test_postfix.py
index dcba0ad01083f61fdbc3d249ddc55f46d8ca318b..10df73987395ab32dff22d4c7cf292e8c74f3e15 100755
--- a/tests/test_postfix.py
+++ b/tests/test_postfix.py
@@ -29,7 +29,7 @@ all_ok = True
 def get_configured_relay():
     status, out = subprocess.getstatusoutput('grep relayhost /etc/postfix/main.cf')
     if status == 0:
-        return out.split('relayhost =')[1]
+        return out.split('relayhost = ')[1]
 
 def check_relay():
     global all_ok