diff --git a/telegram/handlers.go b/telegram/handlers.go
index 8d63971..92e55c9 100644
--- a/telegram/handlers.go
+++ b/telegram/handlers.go
@@ -130,6 +130,9 @@ func (c *Client) updateHandler() {
 			case client.TypeUpdateChatReadOutbox:
 				typedUpdate, _ := update.(*client.UpdateChatReadOutbox)
 				c.updateChatReadOutbox(typedUpdate)
+			case client.TypeUpdateBasicGroupFullInfo:
+				typedUpdate, _ := update.(*client.UpdateBasicGroupFullInfo)
+				c.updateBasicGroupFullInfo(typedUpdate)
 			default:
 				// log only handled types
 				continue
@@ -477,3 +480,19 @@ func (c *Client) updateChatTitle(update *client.UpdateChatTitle) {
 func (c *Client) updateChatReadOutbox(update *client.UpdateChatReadOutbox) {
 	c.sendMarker(update.ChatId, update.LastReadOutboxMessageId, gateway.MarkerTypeDisplayed)
 }
+
+func (c *Client) updateBasicGroupFullInfo(update *client.UpdateBasicGroupFullInfo) {
+	if c.Session.MUC && update.BasicGroupFullInfo != nil {
+		chatID := -update.BasicGroupId
+
+		c.locks.mucCacheLock.Lock()
+
+		mucState, ok := c.mucCache[chatID]
+		if ok && mucState != nil {
+			mucState.Members = make(map[int64]*MUCMember)
+			c.updateMUCMembers(mucState, chatID, update.BasicGroupFullInfo.Members)
+		}
+
+		c.locks.mucCacheLock.Unlock()
+	}
+}
diff --git a/telegram/utils.go b/telegram/utils.go
index 65ee9d5..b166551 100644
--- a/telegram/utils.go
+++ b/telegram/utils.go
@@ -603,6 +603,15 @@ func (c *Client) sendMUCStatuses(chatID int64) {
 		c.mucCache[chatID] = mucState
 	}
 
+	members, _ := c.client.SearchChatMembers(&client.SearchChatMembersRequest{
+		ChatId: chatID,
+		Limit:  200,
+		Filter: &client.ChatMembersFilterMembers{},
+	})
+	c.updateMUCMembers(mucState, chatID, members.Members)
+}
+
+func (c *Client) updateMUCMembers(mucState *MUCState, chatID int64, members []*client.ChatMember) {
 	sChatId := gateway.MUCNODE(chatID)
 	myNickname := "me"
 	if c.me != nil {
@@ -611,47 +620,31 @@ func (c *Client) sendMUCStatuses(chatID int64) {
 	myAffiliation := "member"
 	myRole := "participant"
 
-	members, err := c.client.SearchChatMembers(&client.SearchChatMembersRequest{
-		ChatId: chatID,
-		Limit:  200,
-		Filter: &client.ChatMembersFilterMembers{},
-	})
-	if err == nil {
-		for _, member := range members.Members {
-			var senderId int64
-			switch member.MemberId.MessageSenderType() {
-			case client.TypeMessageSenderUser:
-				memberUser, _ := member.MemberId.(*client.MessageSenderUser)
-				senderId = memberUser.UserId
-			case client.TypeMessageSenderChat:
-				memberChat, _ := member.MemberId.(*client.MessageSenderChat)
-				senderId = memberChat.ChatId
-			}
-
-			nickname := c.GetMUCNickname(senderId)
-			affiliation, role := c.memberStatusToAffiliationAndRole(member.Status)
-			mucState.Members[senderId] = &MUCMember{
-				Nickname:    nickname,
-				Affiliation: affiliation,
-				Role:        role,
-			}
-
-			if c.me != nil && senderId == c.me.Id {
-				myNickname = nickname
-				myAffiliation = affiliation
-				myRole = role
-				continue
-			}
-
-			c.sendPresence(
-				gateway.SPFrom(sChatId),
-				gateway.SPResource(nickname),
-				gateway.SPImmed(true),
-				gateway.SPMUCAffiliation(affiliation),
-				gateway.SPMUCRole(affiliation),
-				gateway.SPMUCJid(gateway.CHATJID(senderId, true)),
-			)
+	for _, member := range members {
+		senderId := c.GetSenderId(member.MemberId)
+		nickname := c.GetMUCNickname(senderId)
+		affiliation, role := c.memberStatusToAffiliationAndRole(member.Status)
+		mucState.Members[senderId] = &MUCMember{
+			Nickname:    nickname,
+			Affiliation: affiliation,
+			Role:        role,
 		}
+
+		if c.me != nil && senderId == c.me.Id {
+			myNickname = nickname
+			myAffiliation = affiliation
+			myRole = role
+			continue
+		}
+
+		c.sendPresence(
+			gateway.SPFrom(sChatId),
+			gateway.SPResource(nickname),
+			gateway.SPImmed(true),
+			gateway.SPMUCAffiliation(affiliation),
+			gateway.SPMUCRole(role),
+			gateway.SPMUCJid(gateway.CHATJID(senderId, true)),
+		)
 	}
 
 	// according to the spec, own member entry should be sent the last