diff --git a/src/main/java/ru/soune/nocopy/controller/ApiController.java b/src/main/java/ru/soune/nocopy/controller/ApiController.java
index 271582b..53d4e99 100644
--- a/src/main/java/ru/soune/nocopy/controller/ApiController.java
+++ b/src/main/java/ru/soune/nocopy/controller/ApiController.java
@@ -364,7 +364,8 @@ public class ApiController {
                     .contentLength(fileSize)
                     .contentType(MediaType.parseMediaType(contentType))
                     .header(HttpHeaders.CONTENT_DISPOSITION,
-                            "attachment; filename=\"" + entityResponse.getOriginalFileName() + "\"")
+                            "attachment; filename=\"" + entityResponse.getOriginalFileName() +
+                                    "_nocopy_protected" + "\"")
                     .body(resource);
         } catch (FileEntityNotFoundException e) {
             Map<String, Object> errorData = new HashMap<>();