diff --git a/internal/backends/memory/roomevents.go b/internal/backends/memory/roomevents.go
index b09892c..f1469c3 100644
--- a/internal/backends/memory/roomevents.go
+++ b/internal/backends/memory/roomevents.go
@@ -5,12 +5,13 @@ import (
 	"time"
 
 	"github.com/signaller-matrix/signaller/internal"
+	"github.com/signaller-matrix/signaller/internal/models/common"
 	"github.com/signaller-matrix/signaller/internal/models/rooms"
 )
 
 type RoomEvent struct {
 	Content        json.RawMessage
-	Type           rooms.Type
+	Type           common.EventType
 	EventID        string
 	Sender         internal.User
 	OriginServerTS time.Time
diff --git a/internal/backends/memory/user.go b/internal/backends/memory/user.go
index b08d535..9b72485 100644
--- a/internal/backends/memory/user.go
+++ b/internal/backends/memory/user.go
@@ -10,7 +10,6 @@ import (
 	"github.com/signaller-matrix/signaller/internal/models/common"
 	"github.com/signaller-matrix/signaller/internal/models/createroom"
 	"github.com/signaller-matrix/signaller/internal/models/devices"
-	"github.com/signaller-matrix/signaller/internal/models/rooms"
 )
 
 type User struct {
@@ -50,7 +49,7 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 	// Create room event
 	events = append(events, RoomEvent{
 		Content:        nil,
-		Type:           rooms.Create,
+		Type:           common.Create,
 		EventID:        internal.RandomString(eventIDSize),
 		Sender:         user,
 		OriginServerTS: t})
@@ -60,7 +59,7 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 	// Set join rules event
 	events = append(events, RoomEvent{
 		Content:        []byte(request.Visibility), // TODO: check visibility vs join rules
-		Type:           rooms.JoinRules,
+		Type:           common.JoinRules,
 		EventID:        internal.RandomString(eventIDSize),
 		Sender:         user,
 		OriginServerTS: t})
@@ -69,7 +68,7 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 	if request.Name != "" {
 		events = append(events, RoomEvent{
 			Content:        nil, // TODO: add
-			Type:           rooms.Name,
+			Type:           common.Name,
 			EventID:        internal.RandomString(eventIDSize),
 			Sender:         user,
 			OriginServerTS: t})
@@ -79,7 +78,7 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 	if request.RoomAliasName != "" {
 		events = append(events, RoomEvent{
 			Content:        nil, // TODO: add
-			Type:           rooms.CanonicalAlias,
+			Type:           common.CanonicalAlias,
 			EventID:        internal.RandomString(eventIDSize),
 			Sender:         user,
 			OriginServerTS: t})
@@ -125,7 +124,7 @@ func (user *User) SetTopic(room internal.Room, topic string) models.ApiError {
 	memRoom.mutex.Unlock()
 
 	rEvent := &RoomEvent{
-		Type:           rooms.Topic,
+		Type:           common.Topic,
 		Sender:         user,
 		OriginServerTS: time.Now(),
 		Room:           room}
@@ -206,7 +205,7 @@ func (user *User) SendMessage(room internal.Room, text string) models.ApiError {
 
 	rEvent := &RoomEvent{
 		Content:        nil,
-		Type:           rooms.Message,
+		Type:           common.Message,
 		EventID:        internal.RandomString(defaultTokenSize),
 		Sender:         user,
 		OriginServerTS: time.Now(),
diff --git a/internal/models/rooms/rooms.go b/internal/models/rooms/rooms.go
index a5ee53d..185c261 100644
--- a/internal/models/rooms/rooms.go
+++ b/internal/models/rooms/rooms.go
@@ -3,6 +3,8 @@ package rooms
 import (
 	"encoding/json"
 
+	"github.com/signaller-matrix/signaller/internal/models/common"
+
 	"github.com/signaller-matrix/signaller/internal/models/events"
 )
 
@@ -17,13 +19,13 @@ const (
 
 // https://matrix.org/docs/spec/client_server/latest#room-event-fields
 type Event struct {
-	Content        json.RawMessage `json:"content"`            // Required. The fields in this object will vary depending on the type of event. When interacting with the REST API, this is the HTTP body.
-	Type           Type            `json:"type"`               // Required. The type of event. This SHOULD be namespaced similar to Java package naming conventions e.g. 'com.example.subdomain.event.type'
-	EventID        string          `json:"event_id"`           // Required. The globally unique event identifier.
-	Sender         string          `json:"sender"`             // Required. Contains the fully-qualified ID of the user who sent this event.
-	OriginServerTS int64           `json:"origin_server_ts"`   // Required. Timestamp in milliseconds on originating homeserver when this event was sent.
-	Unsigned       UnsignedData    `json:"unsigned,omitempty"` // Contains optional extra information about the event.
-	RoomID         string          `json:"room_id"`            // Required. The ID of the room associated with this event. Will not be present on events that arrive through /sync, despite being required everywhere else.
+	Content        json.RawMessage  `json:"content"`            // Required. The fields in this object will vary depending on the type of event. When interacting with the REST API, this is the HTTP body.
+	Type           common.EventType `json:"type"`               // Required. The type of event. This SHOULD be namespaced similar to Java package naming conventions e.g. 'com.example.subdomain.event.type'
+	EventID        string           `json:"event_id"`           // Required. The globally unique event identifier.
+	Sender         string           `json:"sender"`             // Required. Contains the fully-qualified ID of the user who sent this event.
+	OriginServerTS int64            `json:"origin_server_ts"`   // Required. Timestamp in milliseconds on originating homeserver when this event was sent.
+	Unsigned       UnsignedData     `json:"unsigned,omitempty"` // Contains optional extra information about the event.
+	RoomID         string           `json:"room_id"`            // Required. The ID of the room associated with this event. Will not be present on events that arrive through /sync, despite being required everywhere else.
 }
 
 type UnsignedData struct {