diff --git a/dirsrvtests/tests/suites/replication/regression_m2_test.py b/dirsrvtests/tests/suites/replication/regression_m2_test.py
index 6cfed1d1d..ed138013d 100644
--- a/dirsrvtests/tests/suites/replication/regression_m2_test.py
+++ b/dirsrvtests/tests/suites/replication/regression_m2_test.py
@@ -68,7 +68,7 @@ def __init__(self, from_inst, to_inst, cn = None):
             self.binddn = f'cn={cn},cn=config'
         else:
             self.usedn = False
-            self.cn = f'{DEFAULT_SUFFIX}:{self.from_inst.host}:{self.from_inst.sslport}'
+            self.cn = ldap.dn.escape_dn_chars(f'{DEFAULT_SUFFIX}:{self.from_inst.host}:{self.from_inst.sslport}')
             self.binddn = f'cn={self.cn}, ou=Services, {DEFAULT_SUFFIX}'
         self.original_state = []
         self._pass = False