diff --git a/bridge/mattermost/mattermost.go b/bridge/mattermost/mattermost.go
index c365784c..e2bf228d 100644
--- a/bridge/mattermost/mattermost.go
+++ b/bridge/mattermost/mattermost.go
@@ -140,8 +140,8 @@ func (b *Bmattermost) handleMatterClient(mchan chan *MMMessage) {
 			m.Username = message.Username
 			m.Channel = message.Channel
 			m.Text = message.Text
-			if len(message.Post.Filenames) > 0 {
-				for _, link := range b.mc.GetPublicLinks(message.Post.Filenames) {
+			if len(message.Post.FileIds) > 0 {
+				for _, link := range b.mc.GetPublicLinks(message.Post.FileIds) {
 					m.Text = m.Text + "\n" + link
 				}
 			}