diff --git a/adm-zip.js b/adm-zip.js
index eb9c6ee..c3bebf3 100644
--- a/adm-zip.js
+++ b/adm-zip.js
@@ -46,7 +46,6 @@ module.exports = function (/**String*/ input, /** object */ options) {
     // instanciate utils filesystem
     const filetools = new Utils(opts);
 
-    opts.decoder = Utils.decoder;
     if (typeof opts.decoder !== "object" || typeof opts.decoder.encode !== "function" || typeof opts.decoder.decode !== "function") {
         opts.decoder = Utils.decoder;
     }
diff --git a/zipEntry.js b/zipEntry.js
index 51c44a2..c2cae53 100644
--- a/zipEntry.js
+++ b/zipEntry.js
@@ -339,7 +339,7 @@ module.exports = function (/** object */ options, /*Buffer*/ input) {
         },
 
         packCentralHeader: function () {
-            _centralHeader.flag_efs = this.efs;
+            _centralHeader.flags_efs = this.efs;
             // 1. create header (buffer)
             var header = _centralHeader.centralHeaderToBinary();
             var addpos = Utils.Constants.CENHDR;
@@ -360,7 +360,7 @@ module.exports = function (/** object */ options, /*Buffer*/ input) {
 
         packLocalHeader: function () {
             let addpos = 0;
-
+            _centralHeader.flags_efs = this.efs;
             // 1. construct local header Buffer
             const localHeaderBuf = _centralHeader.localHeaderToBinary();
             // 2. localHeader - crate header buffer