diff --git a/modules/core/src/com/haulmont/addon/cubaaws/s3/AmazonS3FileStorage.java b/modules/core/src/com/haulmont/addon/cubaaws/s3/AmazonS3FileStorage.java
index a06e365..7e0b0e3 100644
--- a/modules/core/src/com/haulmont/addon/cubaaws/s3/AmazonS3FileStorage.java
+++ b/modules/core/src/com/haulmont/addon/cubaaws/s3/AmazonS3FileStorage.java
@@ -27,7 +27,7 @@
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.context.event.EventListener;
 import software.amazon.awssdk.auth.credentials.*;
-import software.amazon.awssdk.core.exception.SdkClientException;
+import software.amazon.awssdk.core.exception.SdkException;
 import software.amazon.awssdk.core.sync.RequestBody;
 import software.amazon.awssdk.core.sync.ResponseTransformer;
 import software.amazon.awssdk.regions.Region;
@@ -132,7 +132,7 @@ public void saveFile(FileDescriptor fileDescr, byte[] data) throws FileStorageEx
                             .uploadId(response.uploadId())
                             .multipartUpload(completedMultipartUpload).build();
             s3Client.completeMultipartUpload(completeMultipartUploadRequest);
-        } catch (SdkClientException e) {
+        } catch (SdkException e) {
             String message = String.format("Could not save file %s.", getFileName(fileDescr));
             throw new FileStorageException(FileStorageException.Type.IO_EXCEPTION, message);
         }
@@ -153,7 +153,7 @@ public void removeFile(FileDescriptor fileDescr) throws FileStorageException {
                     .key(resolveFileName(fileDescr))
                     .build();
             s3Client.deleteObject(deleteObjectRequest);
-        } catch (SdkClientException e) {
+        } catch (SdkException e) {
             String message = String.format("Could not delete file %s.", getFileName(fileDescr));
             throw new FileStorageException(FileStorageException.Type.IO_EXCEPTION, message);
         }
@@ -169,7 +169,7 @@ public InputStream openStream(FileDescriptor fileDescr) throws FileStorageExcept
                     .key(resolveFileName(fileDescr))
                     .build();
             is = s3Client.getObject(getObjectRequest, ResponseTransformer.toInputStream());
-        } catch (SdkClientException e) {
+        } catch (SdkException e) {
             String message = String.format("Could not load file %s.", getFileName(fileDescr));
             throw new FileStorageException(FileStorageException.Type.IO_EXCEPTION, message);
         }
@@ -227,10 +227,6 @@ protected String getFileName(FileDescriptor fileDescriptor) {
         }
     }
 
-    protected String getS3StorageClass() {
-        return "REDUCED_REDUNDANCY";
-    }
-
     protected String getRegionName() {
         return amazonS3Config.getRegionName();
     }