diff --git a/Server.go b/Server.go
index c367854..762eda3 100644
--- a/Server.go
+++ b/Server.go
@@ -161,7 +161,7 @@ func (this *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		this.handleInformation(w, r.URL.Path[len(metadataUrlPrefix):])
 
 	} else if r.Method == "GET" && strings.HasPrefix(r.URL.Path, previewUrlPrefix) {
-		this.handlePreview(w, r.URL.Path[len(previewUrlPrefix):])
+		this.handlePreview(r.Context(), w, r.URL.Path[len(previewUrlPrefix):])
 
 	} else if r.Method == "GET" && rxThumbUrl.MatchString(r.URL.Path) {
 		parts := rxThumbUrl.FindStringSubmatch(r.URL.Path)
diff --git a/preview.go b/preview.go
index 7cad364..4de5862 100644
--- a/preview.go
+++ b/preview.go
@@ -1,6 +1,7 @@
 package contented
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"html"
@@ -12,7 +13,7 @@ import (
 	"time"
 )
 
-func (this *Server) handlePreview(w http.ResponseWriter, fileIDList string) {
+func (this *Server) handlePreview(ctx context.Context, w http.ResponseWriter, fileIDList string) {
 
 	fileIDs := strings.Split(fileIDList, `-`)