diff --git a/internal/caches/reader_file.go b/internal/caches/reader_file.go
index 1d3e6db..d97ec75 100644
--- a/internal/caches/reader_file.go
+++ b/internal/caches/reader_file.go
@@ -63,6 +63,7 @@ func (this *FileReader) Init() error {
 	// body
 	bodySize := int(binary.BigEndian.Uint64(buf[SizeExpiresAt+SizeStatus+SizeURLLength+SizeHeaderLength : SizeExpiresAt+SizeStatus+SizeURLLength+SizeHeaderLength+SizeBodyLength]))
 	if bodySize == 0 {
+		isOk = true
 		return nil
 	}
 	this.bodySize = int64(bodySize)