diff --git a/src/main/java/ru/soune/nocopy/repository/ImageSimilarityRepository.java b/src/main/java/ru/soune/nocopy/repository/ImageSimilarityRepository.java
index add9315..0ae7006 100644
--- a/src/main/java/ru/soune/nocopy/repository/ImageSimilarityRepository.java
+++ b/src/main/java/ru/soune/nocopy/repository/ImageSimilarityRepository.java
@@ -20,6 +20,7 @@ public interface ImageSimilarityRepository
             f.support_id AS supportId,
             f.created_at AS uploadDate,
             f.protection_status AS protectionStatus,
+            f.file_extension AS extension,
             h.hash64_hi AS hash64Hi,
             h.hash64_lo AS hash64Lo
         FROM image_hashes ref
@@ -43,6 +44,7 @@ public interface ImageSimilarityRepository
             f.support_id AS supportId,
             f.created_at AS uploadDate,
             f.protection_status AS protectionStatus,
+            f.file_extension AS extension,
             h.hash64_hi AS hash64Hi,
             h.hash64_lo AS hash64Lo
         FROM image_hashes ref
@@ -70,6 +72,7 @@ public interface ImageSimilarityRepository
         f.stored_file_name AS similarFileId,
         f.support_id AS supportId,
         f.created_at AS uploadDate,
+        f.file_extension AS extension,
         f.protection_status AS protectionStatus
     FROM image_hashes h
     JOIN file_entities f ON f.id = h.file_id
diff --git a/src/main/java/ru/soune/nocopy/repository/SimilarImageProjection.java b/src/main/java/ru/soune/nocopy/repository/SimilarImageProjection.java
index 9b9c8e7..4d3f47f 100644
--- a/src/main/java/ru/soune/nocopy/repository/SimilarImageProjection.java
+++ b/src/main/java/ru/soune/nocopy/repository/SimilarImageProjection.java
@@ -14,4 +14,5 @@ public interface SimilarImageProjection {
     Long getSupportId();
     LocalDateTime getUploadDate();
     ProtectionStatus getProtectionStatus();
+    String getExtension();
 }
\ No newline at end of file
diff --git a/src/main/java/ru/soune/nocopy/service/FileSimilarityService.java b/src/main/java/ru/soune/nocopy/service/FileSimilarityService.java
index 14f55ef..c479ffd 100644
--- a/src/main/java/ru/soune/nocopy/service/FileSimilarityService.java
+++ b/src/main/java/ru/soune/nocopy/service/FileSimilarityService.java
@@ -237,7 +237,9 @@ public class FileSimilarityService {
         return SimilarFileDTO.builder()
                 .fileId(similarImageProjection.getId())
                 .ownerId(similarImageProjection.getUserId())
-                .originalFileName(similarImageProjection.getOriginalFileName())
+                .originalFileName(similarImageProjection.getOriginalFileName().replace("." +
+                        similarImageProjection.getExtension(), "") + "_nocopy_protected" +
+                        "." + similarImageProjection.getExtension())
                 .fileSize(similarImageProjection.getFileSize())
                 .hammingDistance(hamming)
                 .similarityLevel(level)
@@ -252,7 +254,9 @@ public class FileSimilarityService {
         return SimilarFileDTO.builder()
                 .fileId(fileEntity.getId())
                 .ownerId(fileEntity.getUserId())
-                .originalFileName(fileEntity.getOriginalFileName())
+                .originalFileName(fileEntity.getOriginalFileName().replace("." +
+                        fileEntity.getFileExtension(), "") + "_nocopy_protected" +
+                        "." + fileEntity.getFileExtension())
                 .fileSize(fileEntity.getFileSize())
                 .uploadDate(fileEntity.getCreatedAt())
                 .status(fileEntity.getProtectionStatus())