diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 537e8679900b..3ca593cdda76 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -3779,7 +3779,7 @@ SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon,
 		if (*out_data == NULL) {
 			rc = -ENOMEM;
 			goto cnotify_exit;
-		} else
+		} else if (plen)
 			*plen = le32_to_cpu(smb_rsp->OutputBufferLength);
 	}