diff --git a/lib/interactor/initializer.rb b/lib/interactor/initializer.rb
index 56406ee..d17590e 100644
--- a/lib/interactor/initializer.rb
+++ b/lib/interactor/initializer.rb
@@ -24,7 +24,7 @@ def initialize_with(*attributes)
 
       def initialize_with_keyword_params(*attributes)
         signature = attributes.map { |attr| "#{attr}:" }.join(', ')
-        class_methods = Interactor::Initializer::Helper.methods_with_keywords
+        class_methods = Interactor::Initializer::Helper.methods_with_keywords(attributes)
 
         Interactor::Initializer::Helper.modify_class(self, signature, attributes, class_methods)
       end
diff --git a/lib/interactor/initializer/helper.rb b/lib/interactor/initializer/helper.rb
index c4ed09c..3b3704e 100644
--- a/lib/interactor/initializer/helper.rb
+++ b/lib/interactor/initializer/helper.rb
@@ -40,18 +40,21 @@ def self.with(*args)
     RUBY
   end
 
-  def self.methods_with_keywords
+  def self.methods_with_keywords(attributes)
+    signature = attributes.map { |attr| "#{attr}:" }.join(', ')
+    initializer_params = attributes.map { |attr| "#{attr}: #{attr}" }.join(', ')
+
     <<-RUBY
-      def self.for(args)
-        new(**args).run
+      def self.for(#{signature})
+        new(#{initializer_params}).run
       end
 
-      def self.run(args)
-        new(**args).run
+      def self.run(#{signature})
+        new(#{initializer_params}).run
       end
 
-      def self.with(args)
-        new(**args).run
+      def self.with(#{signature})
+        new(#{initializer_params}).run
       end
     RUBY
   end
diff --git a/spec/interactor/initializer_spec.rb b/spec/interactor/initializer_spec.rb
index e82ea3f..d928131 100644
--- a/spec/interactor/initializer_spec.rb
+++ b/spec/interactor/initializer_spec.rb
@@ -68,19 +68,19 @@ def run
     end
 
     describe '.for' do
-      subject { interactor.for(params) }
+      subject { interactor.for(**params) }
 
       it { is_expected.to eq(:result) }
     end
 
     describe '.with' do
-      subject { interactor.with(params) }
+      subject { interactor.with(**params) }
 
       it { is_expected.to eq(:result) }
     end
 
     describe '.run' do
-      subject { interactor.run(params) }
+      subject { interactor.run(**params) }
 
       it { is_expected.to eq(:result) }
     end
@@ -95,7 +95,7 @@ def run
     end
 
     context 'when incorrect keywords' do
-      subject { interactor.for(params) }
+      subject { interactor.for(**params) }
 
       let(:params) do
         { arg1: 'value2', arg4: 'value2' }