diff --git a/CHANGELOG.md b/CHANGELOG.md
index 458852b3bd..3948d65107 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 #### Features
 
 * Your contribution here.
+* [#1940](https://github.com/ruby-grape/grape/pull/1940): Get rid of a needless step in HashWithIndifferentAccess - [@dnesteryuk](https://github.com/dnesteryuk).
 * [#1938](https://github.com/ruby-grape/grape/pull/1938): Add project metadata to the gemspec - [@orien](https://github.com/orien).
 * [#1920](https://github.com/ruby-grape/grape/pull/1920): Replace Virtus with dry-types - [@dnesteryuk](https://github.com/dnesteryuk).
 
diff --git a/lib/grape/dsl/inside_route.rb b/lib/grape/dsl/inside_route.rb
index 2953d590df..0fc5948ada 100644
--- a/lib/grape/dsl/inside_route.rb
+++ b/lib/grape/dsl/inside_route.rb
@@ -84,7 +84,8 @@ def should_be_empty_array?(declared_param, passed_children_params)
         end
 
         def declared_param_is_array?(declared_param)
-          route_options_params[declared_param.to_s] && route_options_params[declared_param.to_s][:type] == 'Array'
+          key = declared_param.to_s
+          route_options_params[key] && route_options_params[key][:type] == 'Array'
         end
 
         def route_options_params
diff --git a/lib/grape/endpoint.rb b/lib/grape/endpoint.rb
index 0551ef88d2..336db40b1e 100644
--- a/lib/grape/endpoint.rb
+++ b/lib/grape/endpoint.rb
@@ -154,7 +154,7 @@ def mount_in(router)
             methods << Grape::Http::Headers::HEAD
           end
           methods.each do |method|
-            unless route.request_method.to_s.upcase == method
+            unless route.request_method == method
               route = Grape::Router::Route.new(method, route.origin, route.attributes.to_h)
             end
             router.append(route.apply(self))
diff --git a/lib/grape/extensions/active_support/hash_with_indifferent_access.rb b/lib/grape/extensions/active_support/hash_with_indifferent_access.rb
index c6bf2ca1aa..105e236f54 100644
--- a/lib/grape/extensions/active_support/hash_with_indifferent_access.rb
+++ b/lib/grape/extensions/active_support/hash_with_indifferent_access.rb
@@ -14,10 +14,9 @@ def params_builder
           end
 
           def build_params
-            params = ::ActiveSupport::HashWithIndifferentAccess[rack_params]
+            params = ::ActiveSupport::HashWithIndifferentAccess.new(rack_params)
             params.deep_merge!(grape_routing_args) if env[Grape::Env::GRAPE_ROUTING_ARGS]
-            # TODO: remove, in Rails 4 or later ::ActiveSupport::HashWithIndifferentAccess converts nested Hashes into indifferent access ones
-            DeepHashWithIndifferentAccess.deep_hash_with_indifferent_access(params)
+            params
           end
         end
       end
diff --git a/lib/grape/extensions/deep_hash_with_indifferent_access.rb b/lib/grape/extensions/deep_hash_with_indifferent_access.rb
deleted file mode 100644
index e18601f8d8..0000000000
--- a/lib/grape/extensions/deep_hash_with_indifferent_access.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-module Grape
-  module Extensions
-    module DeepHashWithIndifferentAccess
-      def self.deep_hash_with_indifferent_access(object)
-        case object
-        when ::Hash
-          object.inject(::ActiveSupport::HashWithIndifferentAccess.new) do |new_hash, (key, value)|
-            new_hash.merge!(key => deep_hash_with_indifferent_access(value))
-          end
-        when ::Array
-          object.map { |element| deep_hash_with_indifferent_access(element) }
-        else
-          object
-        end
-      end
-    end
-  end
-end
diff --git a/lib/grape/router/route.rb b/lib/grape/router/route.rb
index 52e0098b31..0eff8607fa 100644
--- a/lib/grape/router/route.rb
+++ b/lib/grape/router/route.rb
@@ -62,10 +62,12 @@ def route_path
       end
 
       def initialize(method, pattern, **options)
+        upcased_method = method.to_s.upcase
+
         @suffix     = options[:suffix]
-        @options    = options.merge(method: method.to_s.upcase)
+        @options    = options.merge(method: upcased_method)
         @pattern    = Pattern.new(pattern, **options)
-        @translator = AttributeTranslator.new(**options, request_method: method.to_s.upcase)
+        @translator = AttributeTranslator.new(**options, request_method: upcased_method)
       end
 
       def exec(env)