diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index dfbd9f1f373daa9b39adeb852595438af0c4177b..5a0ee7f2af062a68fdec065c43099274486c1b2d 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -184,7 +184,7 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
 	if (cifs_pdu == NULL || server == NULL)
 		return -EINVAL;
 
-	if (cifs_pdu->Command == SMB_COM_NEGOTIATE)
+	if (!server->session_estab)
 		return 0;
 
 	if (cifs_pdu->Command == SMB_COM_LOCKING_ANDX) {