diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs
index bda6302..10ae04d 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/SystemRenamePolicy.cs
@@ -16,6 +16,10 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             {
                 return false;
             }
+            if (typeDef.DeclaringType != null && MetaUtil.HasObfuzIgnoreAttribute(typeDef.DeclaringType))
+            {
+                return false;
+            }
             return true;
         }