diff --git a/src/main/java/ru/soune/nocopy/controller/ApiController.java b/src/main/java/ru/soune/nocopy/controller/ApiController.java
index 2b38a7b..31f6d6b 100644
--- a/src/main/java/ru/soune/nocopy/controller/ApiController.java
+++ b/src/main/java/ru/soune/nocopy/controller/ApiController.java
@@ -606,10 +606,14 @@ public class ApiController {
 
             dockViewService.createDockView(viewerRequest, userId);
 
+            String filename = entityResponse.getFileName();
+            String encodedFilename = URLEncoder.encode(filename, StandardCharsets.UTF_8)
+                    .replace("+", "%20");
+
             return ResponseEntity.ok()
                     .contentType(MediaType.APPLICATION_OCTET_STREAM)
                     .header(HttpHeaders.CONTENT_DISPOSITION,
-                            "attachment; filename=\"" + entityResponse.getFileName() + "\"")
+                            "attachment; filename*=UTF-8''" + encodedFilename)
                     .body(bytes);
         } catch (FileEntityNotFoundException e) {
             Map<String, Object> errorData = new HashMap<>();