diff --git a/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs b/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs
index b259ddb..4fd38fd 100644
--- a/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs
+++ b/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs
@@ -7,7 +7,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
     {
         private bool IsFullIgnoreObfuscatedType(TypeDef typeDef)
         {
-            return typeDef.FullName == "Obfuz.ObfuzIgnoreAttribute" || typeDef.FullName == "Obfuz.ObfuzScope";
+            return typeDef.FullName == "Obfuz.ObfuzIgnoreAttribute" || typeDef.FullName == "Obfuz.ObfuzScope" || typeDef.FullName == "Obfuz.EncryptFieldAttribute";
         }
 
         public override bool NeedRename(TypeDef typeDef)
diff --git a/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/UnityRenamePolicy.cs b/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/UnityRenamePolicy.cs
index a758199..e98fd4e 100644
--- a/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/UnityRenamePolicy.cs
+++ b/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/UnityRenamePolicy.cs
@@ -141,7 +141,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
 
         public override bool NeedRename(TypeDef typeDef)
         {
-            if (MetaUtil.IsScriptOrSerializableType(typeDef))
+            if (MetaUtil.IsScriptType(typeDef))
             {
                 return false;
             }
@@ -163,7 +163,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
         public override bool NeedRename(MethodDef methodDef)
         {
             TypeDef typeDef = methodDef.DeclaringType;
-            if (MetaUtil.IsInheritFromUnityObject(typeDef) && s_monoBehaviourEvents.Contains(methodDef.Name))
+            if (MetaUtil.IsInheritFromMonoBehaviour(typeDef) && s_monoBehaviourEvents.Contains(methodDef.Name))
             {
                 return false;
             }
diff --git a/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs b/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs
index f4ca314..8d2525c 100644
--- a/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs
+++ b/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs
@@ -116,7 +116,7 @@ namespace Obfuz.Utils
             return null;
         }
 
-        public static bool IsInheritFromUnityObject(TypeDef typeDef)
+        public static bool IsInheritFromMonoBehaviour(TypeDef typeDef)
         {
             TypeDef cur = typeDef;
             while (true)
@@ -126,7 +126,7 @@ namespace Obfuz.Utils
                 {
                     return false;
                 }
-                if (cur.Name == "Object" && cur.Namespace == "UnityEngine" && cur.Module.Name == "UnityEngine.CoreModule.dll")
+                if (cur.Name == "MonoBehaviour" && cur.Namespace == "UnityEngine" && cur.Module.Name == "UnityEngine.CoreModule.dll")
                 {
                     return true;
                 }
@@ -134,18 +134,8 @@ namespace Obfuz.Utils
         }
 
 
-
-        public static bool IsScriptOrSerializableType(TypeDef type)
+        public static bool IsScriptType(TypeDef type)
         {
-            if (type.ContainsGenericParameter)
-            {
-                return false;
-            }
-            if (type.IsSerializable)
-            {
-                return true;
-            }
-
             for (TypeDef parentType = GetBaseTypeDef(type); parentType != null; parentType = GetBaseTypeDef(parentType))
             {
                 if ((parentType.Name == "MonoBehaviour" || parentType.Name == "ScriptableObject")
@@ -159,6 +149,11 @@ namespace Obfuz.Utils
             return false;
         }
 
+        public static bool IsScriptOrSerializableType(TypeDef type)
+        {
+            return type.IsSerializable || IsScriptType(type);
+        }
+
         public static bool IsSerializableTypeSig(TypeSig typeSig)
         {
             typeSig = typeSig.RemovePinnedAndModifiers();