diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java
index 55ff51a..d236b20 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java
@@ -186,7 +186,8 @@ public abstract class StandardV2RayBean extends AbstractBean {
 
     public boolean isVLESS() {
         if (this instanceof VMessBean) {
-            return ((VMessBean) this).alterId == -1;
+            Integer aid = ((VMessBean) this).alterId;
+            return aid != null && aid == -1;
         }
         return false;
     }
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt
index ba68f6a..20e6320 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt
@@ -207,6 +207,13 @@ fun StandardV2RayBean.parseDuckSoft(url: HttpUrl) {
         }
     }
 
+    // maybe from matsuri vmess exoprt
+    if (this is VMessBean && !isVLESS) {
+        url.queryParameter("encryption")?.let {
+            encryption = it
+        }
+    }
+
     url.queryParameter("packetEncoding")?.let {
         when (it) {
             "packet" -> packetEncoding = 1