diff --git a/spec/openapi_3/form_params_spec.rb b/spec/openapi_3/form_params_spec.rb
index b43551ca..0a0e83e7 100644
--- a/spec/openapi_3/form_params_spec.rb
+++ b/spec/openapi_3/form_params_spec.rb
@@ -67,24 +67,27 @@ def app
     }]
 
     expect(subject['paths']['/items/{id}']['post']['requestBody']).to eq 'content' => {
-      'application/json' => { 'schema' => { 'properties' => {}, 'type' => 'object' } },
-      'application/x-www-form-urlencoded' => {
+      'application/json' => {
         'schema' => {
-          'properties' => {
-            'conditions' => {
-              'description' => 'conditions of item',
-              'enum' => %w[one two],
-              'type' => 'string'
-            },
-            'name' => {
-              'description' => 'name of item',
-              'type' => 'string'
-            }
-          },
-          'required' => ['name'],
-          'type' => 'object'
+          '$ref' => '#/components/schemas/postItems'
         }
       }
     }
+
+    expect(subject['components']['schemas']['postItems']).to match(
+      'properties' => {
+        'conditions' => {
+          'description' => 'conditions of item',
+          'enum' => %w[one two],
+          'type' => 'string'
+        },
+        'name' => {
+          'description' => 'name of item',
+          'type' => 'string'
+        }
+      },
+      'required' => ['name'],
+      'type' => 'object'
+    )
   end
 end
diff --git a/spec/openapi_3/openapi_3_param_type_body_spec.rb b/spec/openapi_3/openapi_3_param_type_body_spec.rb
index 02833963..dbfa89c2 100644
--- a/spec/openapi_3/openapi_3_param_type_body_spec.rb
+++ b/spec/openapi_3/openapi_3_param_type_body_spec.rb
@@ -85,11 +85,7 @@ def app
     specify do
       expect(subject['paths']['/wo_entities/in_body']['post']['requestBody']['content']['application/json']).to eql(
         'schema' => {
-          'properties' => {
-            'WoEntitiesInBody' => { '$ref' => '#/components/schemas/postWoEntitiesInBody' }
-          },
-          'required' => ['WoEntitiesInBody'],
-          'type' => 'object'
+          '$ref' => '#/components/schemas/postWoEntitiesInBody'
         }
       )
     end
@@ -116,11 +112,7 @@ def app
 
       expect(subject['paths']['/wo_entities/in_body/{key}']['put']['requestBody']['content']['application/json']).to eql(
         'schema' => {
-          'properties' => {
-            'WoEntitiesInBody' => { '$ref' => '#/components/schemas/putWoEntitiesInBody' }
-          },
-          'required' => ['WoEntitiesInBody'],
-          'type' => 'object'
+          '$ref' => '#/components/schemas/putWoEntitiesInBody'
         }
       )
     end
@@ -147,13 +139,7 @@ def app
     specify do
       expect(subject['paths']['/with_entities/in_body']['post']['requestBody']['content']['application/json']).to eql(
         'schema' => {
-          'properties' => {
-            'WithEntitiesInBody' => {
-              '$ref' => '#/components/schemas/postWithEntitiesInBody'
-            }
-          },
-          'required' => ['WithEntitiesInBody'],
-          'type' => 'object'
+          '$ref' => '#/components/schemas/postWithEntitiesInBody'
         }
       )
     end
@@ -183,11 +169,7 @@ def app
 
       expect(subject['paths']['/with_entities/in_body/{id}']['put']['requestBody']['content']['application/json']).to eql(
         'schema' => {
-          'properties' => {
-            'WithEntitiesInBody' => { '$ref' => '#/components/schemas/putWithEntitiesInBody' }
-          },
-          'required' => ['WithEntitiesInBody'],
-          'type' => 'object'
+          '$ref' => '#/components/schemas/putWithEntitiesInBody'
         }
       )
     end
@@ -207,11 +189,7 @@ def app
     let(:request_parameters_definition) do
       {
         'schema' => {
-          'properties' => {
-            'WithEntityParam' => { '$ref' => '#/components/schemas/postWithEntityParam' }
-          },
-          'required' => ['WithEntityParam'],
-          'type' => 'object'
+          '$ref' => '#/components/schemas/postWithEntityParam'
         }
       }
     end
@@ -219,7 +197,7 @@ def app
     let(:request_body_parameters_definition) do
       {
         'description' => 'put in body with entity parameter',
-        'properties' => { 'data' => { '$ref' => '#/components/schemas/ApiResponse', 'description' => 'request data' } },
+        'properties' => { 'data' => { '$ref' => '#/components/schemas/NestedModule_ApiResponse', 'description' => 'request data' } },
         'type' => 'object'
       }
     end
@@ -234,7 +212,7 @@ def app
     end
 
     specify do
-      expect(subject['components']['schemas']['ApiResponse']).not_to be_nil
+      expect(subject['components']['schemas']['NestedModule_ApiResponse']).not_to be_nil
     end
 
     specify do
diff --git a/spec/openapi_3/param_values_spec.rb b/spec/openapi_3/param_values_spec.rb
index e034f3fe..7228ae5a 100644
--- a/spec/openapi_3/param_values_spec.rb
+++ b/spec/openapi_3/param_values_spec.rb
@@ -12,24 +12,28 @@ def app
         requires :letter, type: String, values: %w[a b c]
       end
       post :plain_array do
+        'ok'
       end
 
       params do
         requires :letter, type: String, values: proc { %w[d e f] }
       end
       post :array_in_proc do
+        'ok'
       end
 
       params do
         requires :letter, type: String, values: 'a'..'z'
       end
       post :range_letter do
+        'ok'
       end
 
       params do
         requires :integer, type: Integer, values: -5..5
       end
       post :range_integer do
+        'ok'
       end
 
       add_swagger_documentation openapi_version: '3.0'
@@ -40,7 +44,7 @@ def first_parameter_info(request)
     get "/swagger_doc/#{request}"
     expect(last_response.status).to eq 200
     body = JSON.parse last_response.body
-    body['paths']["/#{request}"]['post']['requestBody']['content']['application/x-www-form-urlencoded']['schema']
+    body['components']['schemas']["post#{request.camelize}"]
   end
 
   context 'Plain array values' do
@@ -116,12 +120,14 @@ def app
         requires :letter, type: String, values: proc { 'string' }
       end
       post :non_array_in_proc do
+        'ok'
       end
 
       params do
         requires :float, type: Float, values: -5.0..5.0
       end
       post :range_float do
+        'ok'
       end
 
       add_swagger_documentation openapi_version: '3.0'
@@ -132,7 +138,7 @@ def first_parameter_info(request)
     get "/swagger_doc/#{request}"
     expect(last_response.status).to eq 200
     body = JSON.parse last_response.body
-    body['paths']["/#{request}"]['post']['requestBody']['content']['application/x-www-form-urlencoded']['schema']
+    body['components']['schemas']["post#{request.camelize}"]
   end
 
   context 'Non array in proc values' do
diff --git a/spec/openapi_3/params_array_spec.rb b/spec/openapi_3/params_array_spec.rb
index 55beccb4..7cf1c5fc 100644
--- a/spec/openapi_3/params_array_spec.rb
+++ b/spec/openapi_3/params_array_spec.rb
@@ -84,7 +84,7 @@
         end
 
         specify do
-          expect(subject['paths']['/groups']['post']['requestBody']['content']['application/x-www-form-urlencoded']).to eql(
+          expect(subject['paths']['/groups']['post']['requestBody']['content']['application/json']).to eql(
             'schema' => {
               'properties' => {
                 "required_group#{braces}[required_param_1]" => { 'items' => { 'type' => 'string' }, 'type' => 'array' },