diff --git a/cmd/backup/config.go b/cmd/backup/config.go
index 6dec125..e076c51 100644
--- a/cmd/backup/config.go
+++ b/cmd/backup/config.go
@@ -4,8 +4,8 @@
 package main
 
 import (
-	"os"
 	"fmt"
+	"os"
 	"regexp"
 	"time"
 )
@@ -62,14 +62,14 @@ type Config struct {
 }
 
 func (c *Config) resolveSecret(envVar string, secretPath string) (string, error) {
-	if secretPath != "" {
-		data, err := os.ReadFile(secretPath)
-		if err != nil {
-			return "", fmt.Errorf("resolveSecret: error reading secret path: %w", err)
-		}
-		return string(data), nil
+	if secretPath == "" {
+		return envVar, nil
 	}
-	return envVar, nil
+	data, err := os.ReadFile(secretPath)
+	if err != nil {
+		return "", fmt.Errorf("resolveSecret: error reading secret path: %w", err)
+	}
+	return string(data), nil
 }
 
 type RegexpDecoder struct {
diff --git a/internal/storage/s3/s3.go b/internal/storage/s3/s3.go
index bb2394d..97feb80 100644
--- a/internal/storage/s3/s3.go
+++ b/internal/storage/s3/s3.go
@@ -100,8 +100,10 @@ func (b *s3Storage) Copy(file string) error {
 		ContentType:  "application/tar+gzip",
 		StorageClass: b.storageClass,
 	}); err != nil {
-		errResp := minio.ToErrorResponse(err)
-		return fmt.Errorf("(*s3Storage).Copy: error uploading backup to remote storage: [Message]: '%s', [Code]: %s, [StatusCode]: %d", errResp.Message, errResp.Code, errResp.StatusCode)
+		if errResp := minio.ToErrorResponse(err); errResp.Message != "" {
+			return fmt.Errorf("(*s3Storage).Copy: error uploading backup to remote storage: [Message]: '%s', [Code]: %s, [StatusCode]: %d", errResp.Message, errResp.Code, errResp.StatusCode)
+		}
+		return fmt.Errorf("(*s3Storage).Copy: error uploading backup to remote storage: %w", err)
 	}
 	b.Log(storage.LogLevelInfo, b.Name(), "Uploaded a copy of backup `%s` to bucket `%s`.", file, b.bucket)
 
diff --git a/test/secret/docker-compose.yml b/test/secrets/docker-compose.yml
similarity index 76%
rename from test/secret/docker-compose.yml
rename to test/secrets/docker-compose.yml
index 433b1e3..afb9bc4 100644
--- a/test/secret/docker-compose.yml
+++ b/test/secrets/docker-compose.yml
@@ -4,31 +4,19 @@
 version: '3.8'
 
 services:
-  minio_setup:
-    image: alpine:latest
-    deploy:
-      restart_policy:
-        condition: none
-    volumes:
-      - backup_data:/data
-    command: mkdir -p /data/backup
-    
   minio:
-    image: minio/minio:RELEASE.2021-12-20T22-07-16Z
+    image: minio/minio:RELEASE.2020-08-04T23-10-51Z
     deploy:
       restart_policy:
         condition: on-failure
     environment:
-      MINIO_ROOT_USER_FILE: /run/secrets/minio_root_user
-      MINIO_ROOT_PASSWORD_FILE: /run/secrets/minio_root_password
-    command: minio server /data
+      MINIO_ROOT_USER: test
+      MINIO_ROOT_PASSWORD: test
+      MINIO_ACCESS_KEY: test
+      MINIO_SECRET_KEY: GMusLtUmILge2by+z890kQ
+    entrypoint: /bin/ash -c 'mkdir -p /data/backup && minio server /data'
     volumes:
       - backup_data:/data
-    secrets:
-      - minio_root_user
-      - minio_root_password
-    depends_on:
-      - minio_setup
 
   backup:
     image: offen/docker-volume-backup:${TEST_VERSION:-canary}
@@ -81,6 +69,7 @@ volumes:
   backup_data:
     name: backup_data
   pg_data:
+    name: pg_data
 
 secrets:
   minio_root_user:
diff --git a/test/secret/run.sh b/test/secrets/run.sh
similarity index 96%
rename from test/secret/run.sh
rename to test/secrets/run.sh
index c5e32bc..cf3af92 100755
--- a/test/secret/run.sh
+++ b/test/secrets/run.sh
@@ -41,4 +41,4 @@ docker swarm leave --force
 sleep 10
 
 docker volume rm backup_data
-docker volume rm test_stack_pg_data
+docker volume rm pg_data
diff --git a/test/swarm/docker-compose.yml b/test/swarm/docker-compose.yml
index 3ba64ab..7b04be3 100644
--- a/test/swarm/docker-compose.yml
+++ b/test/swarm/docker-compose.yml
@@ -66,3 +66,4 @@ volumes:
   backup_data:
     name: backup_data
   pg_data:
+    name: pg_data
diff --git a/test/swarm/run.sh b/test/swarm/run.sh
index d96fb10..0ec2cc2 100755
--- a/test/swarm/run.sh
+++ b/test/swarm/run.sh
@@ -34,4 +34,4 @@ docker swarm leave --force
 sleep 10
 
 docker volume rm backup_data
-docker volume rm test_stack_pg_data
+docker volume rm pg_data