diff --git a/drivers/s3/util.go b/drivers/s3/util.go
index 31e658bd..99f271aa 100644
--- a/drivers/s3/util.go
+++ b/drivers/s3/util.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"net/http"
+	"net/url"
 	"path"
 	"strings"
 
@@ -198,7 +199,7 @@ func (d *S3) copyFile(ctx context.Context, src string, dst string) error {
 	dstKey := getKey(dst, false)
 	input := &s3.CopyObjectInput{
 		Bucket:     &d.Bucket,
-		CopySource: aws.String("/" + d.Bucket + "/" + srcKey),
+		CopySource: aws.String(url.PathEscape("/" + d.Bucket + "/" + srcKey)),
 		Key:        &dstKey,
 	}
 	_, err := d.client.CopyObject(input)