diff --git a/weed-fs/src/cmd/weed/volume.go b/weed-fs/src/cmd/weed/volume.go
index 9696ffc85..259dbfded 100644
--- a/weed-fs/src/cmd/weed/volume.go
+++ b/weed-fs/src/cmd/weed/volume.go
@@ -105,7 +105,7 @@ func GetHandler(w http.ResponseWriter, r *http.Request) {
 	if ext != "" {
 		mtype := mime.TypeByExtension(ext)
 		w.Header().Set("Content-Type", mtype)
-		if storage.IsCompressable(ext, mtype) {
+		if storage.IsGzippable(ext, mtype) {
 			if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
 				w.Header().Set("Content-Encoding", "gzip")
 			} else {
diff --git a/weed-fs/src/pkg/storage/compress.go b/weed-fs/src/pkg/storage/compress.go
index d441db009..2de547869 100644
--- a/weed-fs/src/pkg/storage/compress.go
+++ b/weed-fs/src/pkg/storage/compress.go
@@ -8,12 +8,12 @@ import (
   "strings"
 )
 
-func IsCompressable(ext, mtype string) bool {
+func IsGzippable(ext, mtype string) bool {
   if ext == ".zip" {
-    return true
+    return false
   }
   if ext == ".rar" {
-    return true
+    return false
   }
   if strings.Index(mtype,"text/")==0 {
     return true
diff --git a/weed-fs/src/pkg/storage/needle.go b/weed-fs/src/pkg/storage/needle.go
index 8f3a26ee6..e352eb55d 100644
--- a/weed-fs/src/pkg/storage/needle.go
+++ b/weed-fs/src/pkg/storage/needle.go
@@ -40,7 +40,7 @@ func NewNeedle(r *http.Request) (n *Needle, fname string, e error) {
 	if dotIndex > 0 {
 		ext := fname[dotIndex:]
 		mtype := mime.TypeByExtension(ext)
-		if IsCompressable(ext, mtype) {
+		if IsGzippable(ext, mtype) {
 			data = GzipData(data)
 		}
 	}