diff --git a/database/portal.go b/database/portal.go
index d8ce90d..7c2d431 100644
--- a/database/portal.go
+++ b/database/portal.go
@@ -150,13 +150,13 @@ func (p *Portal) Scan(row dbutil.Scannable) *Portal {
 
 func (p *Portal) Insert() {
 	query := `
-		INSERT INTO portal (dcid, receiver, type, other_user_id, dc_guild_id, dc_parent_id, mxid,
+		INSERT INTO portal (dcid, receiver, type, other_user_id, dc_guild_id, mxid,
 		                    plain_name, name, name_set, topic, topic_set, avatar, avatar_url, avatar_set,
 		                    encrypted, in_space, first_event_id)
-		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17)
 	`
 	_, err := p.db.Exec(query, p.Key.ChannelID, p.Key.Receiver, p.Type,
-		strPtr(p.OtherUserID), strPtr(p.GuildID), strPtr(p.ParentID), strPtr(string(p.MXID)),
+		strPtr(p.OtherUserID), strPtr(p.GuildID), strPtr(string(p.MXID)),
 		p.PlainName, p.Name, p.NameSet, p.Topic, p.TopicSet, p.Avatar, p.AvatarURL.String(), p.AvatarSet,
 		p.Encrypted, p.InSpace, p.FirstEventID.String())
 
@@ -169,13 +169,13 @@ func (p *Portal) Insert() {
 func (p *Portal) Update() {
 	query := `
 		UPDATE portal
-		SET type=$1, other_user_id=$2, dc_guild_id=$3, dc_parent_id=$4, mxid=$5,
-			plain_name=$6, name=$7, name_set=$8, topic=$9, topic_set=$10, avatar=$11, avatar_url=$12, avatar_set=$13,
-			encrypted=$14, in_space=$15, first_event_id=$16
-		WHERE dcid=$17 AND receiver=$18
+		SET type=$1, other_user_id=$2, dc_guild_id=$3, mxid=$4,
+			plain_name=$5, name=$6, name_set=$7, topic=$8, topic_set=$9, avatar=$10, avatar_url=$11, avatar_set=$12,
+			encrypted=$13, in_space=$14, first_event_id=$15
+		WHERE dcid=$16 AND receiver=$17
 	`
 	_, err := p.db.Exec(query,
-		p.Type, strPtr(p.OtherUserID), strPtr(p.GuildID), strPtr(p.ParentID), strPtr(string(p.MXID)),
+		p.Type, strPtr(p.OtherUserID), strPtr(p.GuildID), strPtr(string(p.MXID)),
 		p.PlainName, p.Name, p.NameSet, p.Topic, p.TopicSet, p.Avatar, p.AvatarURL.String(), p.AvatarSet,
 		p.Encrypted, p.InSpace, p.FirstEventID.String(),
 		p.Key.ChannelID, p.Key.Receiver)
diff --git a/portal.go b/portal.go
index 25e0dc2..e305942 100644
--- a/portal.go
+++ b/portal.go
@@ -108,15 +108,6 @@ func (br *DiscordBridge) loadPortal(dbPortal *database.Portal, key *database.Por
 	if portal.GuildID != "" {
 		portal.Guild = portal.bridge.GetGuildByID(portal.GuildID, true)
 	}
-	if portal.ParentID != "" {
-		parentKey := database.NewPortalKey(portal.ParentID, "")
-		var ok bool
-		portal.Parent, ok = br.portalsByID[parentKey]
-		if !ok {
-			portal.Parent = br.loadPortal(br.DB.Portal.GetByID(parentKey), nil, -1)
-		}
-	}
-
 	return portal
 }
 
@@ -351,7 +342,7 @@ func (portal *Portal) CreateMatrixRoom(user *User, channel *discordgo.Channel) e
 
 	creationContent := make(map[string]interface{})
 	if portal.Type == discordgo.ChannelTypeGuildCategory {
-		creationContent["type"] = event.RoomTypeSpace
+		return nil
 	}
 	if !portal.bridge.Config.Bridge.FederateRooms {
 		creationContent["m.federate"] = false
@@ -1777,18 +1768,12 @@ func (portal *Portal) UpdateParent(parentID string) bool {
 	}
 	portal.log.Debugfln("Updating parent ID %q -> %q", portal.ParentID, parentID)
 	portal.ParentID = parentID
-	if portal.ParentID != "" {
-		portal.Parent = portal.bridge.GetPortalByID(database.NewPortalKey(parentID, ""), discordgo.ChannelTypeGuildCategory)
-	} else {
-		portal.Parent = nil
-	}
+	portal.Parent = nil
 	return true
 }
 
 func (portal *Portal) ExpectedSpaceID() id.RoomID {
-	if portal.Parent != nil {
-		return portal.Parent.MXID
-	} else if portal.Guild != nil {
+	if portal.Guild != nil {
 		return portal.Guild.MXID
 	}
 	return ""
@@ -1798,9 +1783,7 @@ func (portal *Portal) updateSpace() bool {
 	if portal.MXID == "" {
 		return false
 	}
-	if portal.Parent != nil {
-		return portal.addToSpace(portal.Parent.MXID)
-	} else if portal.Guild != nil {
+	if portal.Guild != nil {
 		return portal.addToSpace(portal.Guild.MXID)
 	}
 	return false