diff --git a/cmd/acl-handlers.go b/cmd/acl-handlers.go
index 74ed02843..8c8366a5d 100644
--- a/cmd/acl-handlers.go
+++ b/cmd/acl-handlers.go
@@ -91,7 +91,7 @@ func (api objectAPIHandlers) PutBucketACLHandler(w http.ResponseWriter, r *http.
 		acl := &accessControlPolicy{}
 		if err = xmlDecoder(r.Body, acl, r.ContentLength); err != nil {
 			if terr, ok := err.(*xml.SyntaxError); ok && terr.Msg == io.EOF.Error() {
-				writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingSecurityHeader),
+				writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedXML),
 					r.URL)
 				return
 			}