diff --git a/README.md b/README.md
index 7a6cf3e..dd7fe54 100644
--- a/README.md
+++ b/README.md
@@ -160,7 +160,7 @@ Example:
 
 
 ```swift
-@MutableCopy
+@MutatedCopy
 struct SomeStruct: Equatable {
     let id = "const uuidstring ;)"
     var intValue: Int
@@ -176,7 +176,7 @@ struct SomeStruct: Equatable {
 }
 
 extension SomeStruct {
-    func mutableCopy(configuring: (inout SomeStruct) throws -> Void) rethrows -> SomeStruct {
+    func mutatedCopy(configuring: (_ it: inout SomeStruct) throws -> Void) rethrows -> SomeStruct {
         var mutableCopy = self
         try configuring(&mutableCopy)
 
@@ -187,7 +187,7 @@ extension SomeStruct {
 // usage
 
 let exampleStruct = SomeStruct(parameter1: 0, parameter2: false)
-let exampleStructModified = exampleStruct.mutableCopy {
+let exampleStructModified = exampleStruct.mutatedCopy {
     $0.intValue = 42
     $0.boolValue = true
 }
diff --git a/Sources/VACopyWith/VACopyWith.swift b/Sources/VACopyWith/VACopyWith.swift
index aa215ee..e4af60f 100644
--- a/Sources/VACopyWith/VACopyWith.swift
+++ b/Sources/VACopyWith/VACopyWith.swift
@@ -1,4 +1,4 @@
 @attached(extension, names: arbitrary)
 public macro CopyWith() = #externalMacro(module: "VACopyWithMacros", type: "VACopyWithMacro")
 @attached(extension, names: arbitrary)
-public macro MutableCopy() = #externalMacro(module: "VACopyWithMacros", type: "VAMutableCopyMacro")
+public macro MutatedCopy() = #externalMacro(module: "VACopyWithMacros", type: "VAMutatedCopyMacro")
diff --git a/Sources/VACopyWithClient/main.swift b/Sources/VACopyWithClient/main.swift
index baf13a1..11d12e6 100644
--- a/Sources/VACopyWithClient/main.swift
+++ b/Sources/VACopyWithClient/main.swift
@@ -39,7 +39,7 @@ assert(value2.copyWith(parameter1: [2, 3, 4]) == SomeStruct2(parameter1: [2, 3,
 assert(value2.copyWith(parameter2: .value("new string")) == SomeStruct2(parameter2: "new string"))
 assert(value2.copyWith(parameter2: .nil) == SomeStruct2(parameter2: nil))
 
-@MutableCopy
+@MutatedCopy
 struct SomeStruct3: Equatable {
     let id = "const uuidstring ;)"
     var parameter1: Int
@@ -47,7 +47,7 @@ struct SomeStruct3: Equatable {
 }
 
 let value3 = SomeStruct3(parameter1: 0, parameter2: false)
-assert(value3.mutableCopy {
+assert(value3.mutatedCopy {
     $0.parameter1 = 42
     $0.parameter2 = true
 } == SomeStruct3(parameter1: 42, parameter2: true))
diff --git a/Sources/VACopyWithMacros/VACopyWithMacro.swift b/Sources/VACopyWithMacros/VACopyWithMacro.swift
index 4507c72..110834b 100644
--- a/Sources/VACopyWithMacros/VACopyWithMacro.swift
+++ b/Sources/VACopyWithMacros/VACopyWithMacro.swift
@@ -96,7 +96,7 @@ public struct VACopyWithMacro: ExtensionMacro {
     }
 }
 
-public struct VAMutableCopyMacro: ExtensionMacro {
+public struct VAMutatedCopyMacro: ExtensionMacro {
 
     public static func expansion(
         of node: AttributeSyntax,
@@ -117,7 +117,7 @@ public struct VAMutableCopyMacro: ExtensionMacro {
         return [
             ExtensionDeclSyntax(modifiers: decl.modifiers.accessModifier, extendedType: type) {
                 """
-                func mutableCopy(configuring: (inout \(type)) throws -> Void) rethrows -> \(type) {
+                func mutatedCopy(configuring: (_ it: inout \(type)) throws -> Void) rethrows -> \(type) {
                     var mutableCopy = self
                     try configuring(&mutableCopy)
 
@@ -133,6 +133,6 @@ public struct VAMutableCopyMacro: ExtensionMacro {
 struct VACopyWithPlugin: CompilerPlugin {
     let providingMacros: [Macro.Type] = [
         VACopyWithMacro.self,
-        VAMutableCopyMacro.self,
+        VAMutatedCopyMacro.self,
     ]
 }
diff --git a/Tests/VACopyWithTests/VACopyWithTests+MutableCopy.swift b/Tests/VACopyWithTests/VACopyWithTests+MutatedCopy.swift
similarity index 81%
rename from Tests/VACopyWithTests/VACopyWithTests+MutableCopy.swift
rename to Tests/VACopyWithTests/VACopyWithTests+MutatedCopy.swift
index 64a9728..03b3029 100644
--- a/Tests/VACopyWithTests/VACopyWithTests+MutableCopy.swift
+++ b/Tests/VACopyWithTests/VACopyWithTests+MutatedCopy.swift
@@ -15,10 +15,10 @@ import VACopyWithMacros
 
 extension VACopyWithTests {
 
-    func test_mutableCopy_struct_extension() throws {
+    func test_mutated_struct_extension() throws {
         assertMacroExpansion(
             """
-            @MutableCopy
+            @MutatedCopy
             struct SomeStruct {
             }
             """,
@@ -30,10 +30,10 @@ extension VACopyWithTests {
         )
     }
 
-    func test_mutableCopy_struct_failure() throws {
+    func test_mutated_struct_failure() throws {
         assertMacroExpansion(
             """
-            @MutableCopy
+            @MutatedCopy
             class SomeStruct {
                 let (a, b): (Int, Int)
             }
@@ -48,10 +48,10 @@ extension VACopyWithTests {
         )
     }
 
-    func test_mutableCopy_struct_let() throws {
+    func test_mutated_struct_let() throws {
         assertMacroExpansion(
             """
-            @MutableCopy
+            @MutatedCopy
             struct SomeStruct {
                 let a: Int
             }
@@ -65,10 +65,10 @@ extension VACopyWithTests {
         )
     }
 
-    func test_mutableCopy_struct_var() throws {
+    func test_mutated_struct_var() throws {
         assertMacroExpansion(
             """
-            @MutableCopy
+            @MutatedCopy
             struct SomeStruct {
                 var a: Int
             }
@@ -79,7 +79,7 @@ extension VACopyWithTests {
             }
 
             extension SomeStruct {
-                func mutableCopy(configuring: (inout SomeStruct) throws -> Void) rethrows -> SomeStruct {
+                func mutatedCopy(configuring: (_ it: inout SomeStruct) throws -> Void) rethrows -> SomeStruct {
                     var mutableCopy = self
                     try configuring(&mutableCopy)
 
diff --git a/Tests/VACopyWithTests/VACopyWithTests.swift b/Tests/VACopyWithTests/VACopyWithTests.swift
index 5b5e695..444028e 100644
--- a/Tests/VACopyWithTests/VACopyWithTests.swift
+++ b/Tests/VACopyWithTests/VACopyWithTests.swift
@@ -9,7 +9,7 @@ import VACopyWithMacros
 
 let testMacros: [String: Macro.Type] = [
     "CopyWith": VACopyWithMacro.self,
-    "MutableCopy": VAMutableCopyMacro.self,
+    "MutatedCopy": VAMutatedCopyMacro.self,
 ]
 #endif