diff --git a/docker-compose.yaml b/docker-compose.yaml
index 1225275..8df1c29 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -58,7 +58,7 @@ services:
     environment:
       FILE_STORAGE_PATH: /data/uploads
       MAX_FILE_SIZE: 10737418240
-      FILE_CHUNK_SIZE: 1000000
+      FILE_CHUNK_SIZE: 1048576
       POSTGRES_DB: no_copy_
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: postgres
diff --git a/src/main/java/ru/soune/nocopy/service/file/FileUploadServiceImpl.java b/src/main/java/ru/soune/nocopy/service/file/FileUploadServiceImpl.java
index 3e09822..f54cec9 100644
--- a/src/main/java/ru/soune/nocopy/service/file/FileUploadServiceImpl.java
+++ b/src/main/java/ru/soune/nocopy/service/file/FileUploadServiceImpl.java
@@ -102,7 +102,7 @@ public class FileUploadServiceImpl implements FileUploadService {
         int totalChunks = (int) Math.ceil((double) fileSize / chunkSize);
         log.debug("File will be split into {} chunks (chunk size: {} bytes)",
                 totalChunks, chunkSize);
-        Long chunkSize = totalChunks == 1 ? fileSize : 1000000L;
+        Long chunkSize = totalChunks == 1 ? fileSize : 1048576L;
 
         FileUploadSession session = FileUploadSession.builder()
                 .userId(userId)
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index a9970b3..363d191 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -25,7 +25,7 @@ file:
   storage:
     base-path: ${FILE_STORAGE_PATH:/data/uploads}
     #    chunk-size: ${FILE_CHUNK_SIZE:5242880}  # 5MB
-    chunk-size: ${FILE_CHUNK_SIZE:1000000}  # 1MB
+    chunk-size: ${FILE_CHUNK_SIZE:1048576}  # 1MB
     max-file-size: ${MAX_FILE_SIZE:10737418240}  # 10GB
     max-retry-attempts: ${MAX_RETRY_ATTEMPTS:3}
     chunk-timeout-ms: ${CHUNK_TIMEOUT_MS:300000}  # 5 минут