diff --git a/server/engine/engine.go b/server/engine/engine.go
index 5241afb..c8801d2 100644
--- a/server/engine/engine.go
+++ b/server/engine/engine.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"github.com/imkira/go-observer"
 	"sirlab.de/go/knyt/handler"
+	"sirlab.de/go/knyt/syncdata"
 	"time"
 )
 
@@ -13,14 +14,14 @@ type Engine struct {
 
 func NewEngine() *Engine {
 	engine := Engine{
-		obs: observer.NewProperty(handler.Value{}),
+		obs: observer.NewProperty(syncdata.SyncData{}),
 	}
 	return &engine
 }
 
 func (engine *Engine) Run() {
 	for {
-		value := engine.obs.Value().(handler.Value)
+		value := engine.obs.Value().(syncdata.SyncData)
 		fmt.Printf("sleep: %d\n", value.VersionRef)
 		time.Sleep(1 * time.Second)
 		value.VersionRef++
diff --git a/server/handler/sync.go b/server/handler/sync.go
index 3ba6de4..34588c6 100644
--- a/server/handler/sync.go
+++ b/server/handler/sync.go
@@ -5,13 +5,10 @@ import (
 	"fmt"
 	"github.com/imkira/go-observer"
 	"net/http"
+	"sirlab.de/go/knyt/syncdata"
 	"strconv"
 )
 
-type Value struct {
-	VersionRef int `json:"version"`
-}
-
 func SyncFactory(obs observer.Property) HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		versionRef, err := strconv.Atoi(r.URL.Query().Get("v"))
@@ -20,9 +17,9 @@ func SyncFactory(obs observer.Property) HandlerFunc {
 		}
 
 		stream := obs.Observe()
-		var value Value
+		var value syncdata.SyncData
 		for {
-			value = stream.Value().(Value)
+			value = stream.Value().(syncdata.SyncData)
 			if value.VersionRef >= versionRef {
 				break
 			}
diff --git a/server/syncdata/syncdata.go b/server/syncdata/syncdata.go
new file mode 100644
index 0000000..6512c30
--- /dev/null
+++ b/server/syncdata/syncdata.go
@@ -0,0 +1,5 @@
+package syncdata
+
+type SyncData struct {
+	VersionRef int `json:"version"`
+}