diff --git a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/cifs/CifsServerConfig.java b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/cifs/CifsServerConfig.java
index 3743f9cfb158d7c4784c5619441c8e5e3c1ff43b..7d995c85f272da573a99325d618e679b5a38f6db 100644
--- a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/cifs/CifsServerConfig.java
+++ b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/cifs/CifsServerConfig.java
@@ -76,7 +76,7 @@ class CifsServerConfig
             .entry("host.domain", "OPENBIS")
             .entry("broadcast-mask", "255.255.255.255")
             .entry("smb-dialects", "LanMan,NT")
-            .entry(SMB_PORT_KEY, "1445")
+            .entry(SMB_PORT_KEY, null)
             .entry("session-log-flags", "Negotiate,Socket,Tree")
             .entry("log-level", "INFO")
             .entry("share-name", "STORE")