diff --git a/python/samba/tests/krb5/kdc_base_test.py b/python/samba/tests/krb5/kdc_base_test.py
index 1f042aa78aa..89d374fc5cc 100644
--- a/python/samba/tests/krb5/kdc_base_test.py
+++ b/python/samba/tests/krb5/kdc_base_test.py
@@ -78,7 +78,6 @@ class KDCBaseTest(RawKerberosTest):
     def setUpClass(cls):
         super().setUpClass()
         cls._lp = None
-        cls.host = os.environ["SERVER"]
 
         cls._ldb = None
 
diff --git a/python/samba/tests/krb5/raw_testcase.py b/python/samba/tests/krb5/raw_testcase.py
index b7044546cbd..b9bc08d1fa9 100644
--- a/python/samba/tests/krb5/raw_testcase.py
+++ b/python/samba/tests/krb5/raw_testcase.py
@@ -375,6 +375,8 @@ class RawKerberosTest(TestCaseInTempDir):
     def setUpClass(cls):
         super().setUpClass()
 
+        cls.host = samba.tests.env_get_var_value('SERVER')
+
         # A dictionary containing credentials that have already been
         # obtained.
         cls.creds_dict = {}
@@ -389,8 +391,6 @@ class RawKerberosTest(TestCaseInTempDir):
             strict_checking = '1'
         self.strict_checking = bool(int(strict_checking))
 
-        self.host = samba.tests.env_get_var_value('SERVER')
-
         self.s = None
 
         self.unspecified_kvno = object()