diff --git a/g/crypto/gmd5/gmd5.go b/g/crypto/gmd5/gmd5.go
index 8f9efb595..329cb5ff3 100644
--- a/g/crypto/gmd5/gmd5.go
+++ b/g/crypto/gmd5/gmd5.go
@@ -35,6 +35,7 @@ func EncryptFile(path string) string {
     if e != nil {
         return ""
     }
+    defer f.Close()
     h := md5.New()
     _, e = io.Copy(h, f)
     if e != nil {