diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/FieldEncrypt/ConfigurableEncryptPolicy.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/FieldEncrypt/ConfigurableEncryptPolicy.cs
index 2d8051e..15ce929 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/FieldEncrypt/ConfigurableEncryptPolicy.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/FieldEncrypt/ConfigurableEncryptPolicy.cs
@@ -33,7 +33,7 @@ namespace Obfuz.ObfusPasses.FieldEncrypt
             {
                 return true;
             }
-            if (MetaUtil.HasObfuzIgnoreAttribute(field) || MetaUtil.HasObfuzIgnoreAttribute(field.DeclaringType))
+            if (MetaUtil.HasObfuzIgnoreAttribute(field) || MetaUtil.HasObfuzIgnoreAttributeInSelfOrParent(field.DeclaringType))
             {
                 return false;
             }
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 11eb0d2..de0854d 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
@@ -12,11 +12,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             {
                 return false;
             }
-            if (MetaUtil.HasObfuzIgnoreAttribute(typeDef))
-            {
-                return false;
-            }
-            if (typeDef.DeclaringType != null && MetaUtil.HasObfuzIgnoreAttribute(typeDef.DeclaringType))
+            if (MetaUtil.HasObfuzIgnoreAttributeInSelfOrParent(typeDef))
             {
                 return false;
             }
@@ -34,7 +30,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
                 return false;
             }
 
-            if (MetaUtil.HasObfuzIgnoreAttribute(methodDef) || MetaUtil.HasObfuzIgnoreAttribute(methodDef.DeclaringType))
+            if (MetaUtil.HasObfuzIgnoreAttribute(methodDef) || MetaUtil.HasObfuzIgnoreAttributeInSelfOrParent(methodDef.DeclaringType))
             {
                 return false;
             }
@@ -47,7 +43,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             {
                 return false;
             }
-            if (MetaUtil.HasObfuzIgnoreAttribute(fieldDef) || MetaUtil.HasObfuzIgnoreAttribute(fieldDef.DeclaringType))
+            if (MetaUtil.HasObfuzIgnoreAttribute(fieldDef) || MetaUtil.HasObfuzIgnoreAttributeInSelfOrParent(fieldDef.DeclaringType))
             {
                 return false;
             }
@@ -64,7 +60,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             {
                 return false;
             }
-            if (MetaUtil.HasObfuzIgnoreAttribute(propertyDef) || MetaUtil.HasObfuzIgnoreAttribute(propertyDef.DeclaringType))
+            if (MetaUtil.HasObfuzIgnoreAttribute(propertyDef) || MetaUtil.HasObfuzIgnoreAttributeInSelfOrParent(propertyDef.DeclaringType))
             {
                 return false;
             }
@@ -77,7 +73,7 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             {
                 return false;
             }
-            if (MetaUtil.HasObfuzIgnoreAttribute(eventDef) || MetaUtil.HasObfuzIgnoreAttribute(eventDef.DeclaringType))
+            if (MetaUtil.HasObfuzIgnoreAttribute(eventDef) || MetaUtil.HasObfuzIgnoreAttributeInSelfOrParent(eventDef.DeclaringType))
             {
                 return false;
             }
diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfuscationMethodWhitelist.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfuscationMethodWhitelist.cs
index 3884738..87ca94f 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfuscationMethodWhitelist.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfuscationMethodWhitelist.cs
@@ -57,7 +57,7 @@ namespace Obfuz
             {
                 return true;
             }
-            if (ShouldBeIgnoredByCustomAttribute(type))
+            if (MetaUtil.HasObfuzIgnoreAttributeInSelfOrParent(type))
             {
                 return true;
             }
diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs
index d87e1bf..711e957 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/Utils/MetaUtil.cs
@@ -793,5 +793,21 @@ namespace Obfuz.Utils
         {
             return obj.CustomAttributes.Any(ca => ca.AttributeType.FullName == "Obfuz.EncryptFieldAttribute");
         }
+
+        public static bool HasObfuzIgnoreAttributeInSelfOrParent(TypeDef typeDef)
+        {
+            while (true)
+            {
+                if (HasObfuzIgnoreAttribute(typeDef))
+                {
+                    return true;
+                }
+                typeDef = typeDef.DeclaringType;
+                if (typeDef == null)
+                {
+                    return false;
+                }
+            }
+        }
     }
 }