diff --git a/service/service.go b/service/service.go
index e045a69..e8ee0f5 100644
--- a/service/service.go
+++ b/service/service.go
@@ -575,10 +575,10 @@ func (s *Service) MiniPart(ctx *fiber.Ctx) error {
 	return ctx.Redirect(s.redirectURl, fiber.StatusFound)
 }
 
-const marker = "__CONFIG__"
+const marker = "window.__CONFIG__"
 
 func (s *Service) UploadScriptTemplate(ctx *fiber.Ctx) error {
-	fileHeader, err := ctx.FormFile("file")
+	fileHeader, err := ctx.FormFile("pub.js")
 	if err != nil {
 		return ctx.Status(fiber.StatusBadRequest).SendString("failed to get file: " + err.Error())
 	}
@@ -732,10 +732,15 @@ func (s *Service) GetScriptTemplate(ctx *fiber.Ctx) error {
 		return ctx.Status(fiber.StatusInternalServerError).SendString("failed to marshal props")
 	}
 
+	propsJSONString, err := json.Marshal(string(propsJSON))
+	if err != nil {
+		return ctx.Status(fiber.StatusInternalServerError).SendString("failed to escape props JSON")
+	}
+
 	s.script.mu.RLock()
 	defer s.script.mu.RUnlock()
 
-	script := fmt.Sprintf("%s = %s;\n%s", marker, string(propsJSON), s.script.full)
+	script := fmt.Sprintf("%s = %s;\n%s", marker, string(propsJSONString), s.script.full)
 
 	ctx.Set("Content-Disposition", `attachment; filename="pub.js"`)
 	return ctx.Type("application/javascript").Status(fiber.StatusOK).SendString(script)