diff --git a/upload.go b/upload.go
index b55b498..7e7fc88 100644
--- a/upload.go
+++ b/upload.go
@@ -33,7 +33,7 @@ func uploadPostHandler(w http.ResponseWriter, r *http.Request, sess *Session) {
 		book := parseFile(epub)
 		title, _ := book["title"].(string)
 		file.Seek(0, 0)
-		id, err := StoreNewFile(title, file)
+		id, err := StoreNewFile(title+".epub", file)
 		if err != nil {
 			log.Println("Error storing book (", title, "):", err)
 			continue