diff --git a/app/controllers/cron_controller.rb b/app/controllers/cron_controller.rb
index 8abdaa8e03da90f5943cfeedfa61b684fb6bbc03..5216b890e21c40ad8007c428eff2e1fa55601ea4 100644
--- a/app/controllers/cron_controller.rb
+++ b/app/controllers/cron_controller.rb
@@ -20,7 +20,7 @@ class CronController < ActionController::Base
     else
       raise 'no such cron action'
     end
-    render nothing: true
+    render body: nil
   end
 
   protected
diff --git a/app/controllers/csp_reports_controller.rb b/app/controllers/csp_reports_controller.rb
index 11a1ace07a7494a69345029643b1fee511ac173c..fc48dcc03321fd2a0d969eea5c9c2eb77268c5ef 100644
--- a/app/controllers/csp_reports_controller.rb
+++ b/app/controllers/csp_reports_controller.rb
@@ -19,6 +19,6 @@ class CspReportsController < ApplicationController
       user_agent: request.user_agent,
       violated_directive: report['violated-directive']
     )
-    render nothing: true
+    render body: nil
   end
 end
diff --git a/app/controllers/pictures_controller.rb b/app/controllers/pictures_controller.rb
index d146073916c89420a23349919fe056d413eead80..6d424ac3ca3e47f6cc65e73819183b6757929256 100644
--- a/app/controllers/pictures_controller.rb
+++ b/app/controllers/pictures_controller.rb
@@ -22,7 +22,7 @@ class PicturesController < ApplicationController
     send_file(@picture.private_file_path(@geometry), type: @picture.content_type, disposition: 'inline')
   rescue ErrorMessage => e
     Rails.logger.warn e
-    render nothing: true, status: 404
+    render body: nil, status: 404
   end
 
   protected
diff --git a/extensions/pages/ranked_vote_page/app/controllers/ranked_vote_possibles_controller.rb b/extensions/pages/ranked_vote_page/app/controllers/ranked_vote_possibles_controller.rb
index 89eae4313e7a37362acb4bcf71d1b9987d7de41c..97dca4d0107388b0a84556c76c6eb42a38e07713 100644
--- a/extensions/pages/ranked_vote_page/app/controllers/ranked_vote_possibles_controller.rb
+++ b/extensions/pages/ranked_vote_page/app/controllers/ranked_vote_possibles_controller.rb
@@ -11,7 +11,7 @@ class RankedVotePossiblesController < Page::BaseController
     current_user.updated(@page)
     find_possibles
   rescue ActionController::ParameterMissing
-    render nothing: true
+    render body: nil
   end
 
   def create
diff --git a/extensions/pages/rate_many_page/app/controllers/rate_many_possibles_controller.rb b/extensions/pages/rate_many_page/app/controllers/rate_many_possibles_controller.rb
index 752b6c5a267f7ebe3c26805fdda7646484ac7ee4..d68ef027135053e7138f35a218d376af04fddc70 100644
--- a/extensions/pages/rate_many_page/app/controllers/rate_many_possibles_controller.rb
+++ b/extensions/pages/rate_many_page/app/controllers/rate_many_possibles_controller.rb
@@ -12,7 +12,7 @@ class RateManyPossiblesController < Page::BaseController
       position = ids.index(possible.id.to_s)
       possible.update_attribute('position', position + 1) if position
     end
-    render nothing: true
+    render body: nil
   end
 
   def create
diff --git a/extensions/pages/task_list_page/app/controllers/tasks_controller.rb b/extensions/pages/task_list_page/app/controllers/tasks_controller.rb
index 0f89bdc531880922542adf67de7392cd4cc066d8..118a0c9927b320c732bfed9484ac68b2e8d4accb 100644
--- a/extensions/pages/task_list_page/app/controllers/tasks_controller.rb
+++ b/extensions/pages/task_list_page/app/controllers/tasks_controller.rb
@@ -21,7 +21,7 @@ class TasksController < Page::BaseController
         task.update_attribute('position', i + 1) if i
       end
     end
-    render nothing: true
+    render body: nil
   end
 
   def edit; end
@@ -42,7 +42,7 @@ class TasksController < Page::BaseController
     @task.remove_from_list
     @task.destroy
     current_user.updated(@page)
-    render nothing: true
+    render body: nil
   end
 
   protected
diff --git a/test/functional/csp_reports_controller.rb b/test/functional/csp_reports_controller.rb
new file mode 100644
index 0000000000000000000000000000000000000000..9cf1b8fde53db787c659381de52f687530de7539
--- /dev/null
+++ b/test/functional/csp_reports_controller.rb
@@ -0,0 +1,11 @@
+require 'test_helper'
+class CspReportsControllerTest < ActionController::TestCase
+  def test_happy_path
+    post :create , body: csp_report_json
+    assert_response :success
+  end
+
+  def csp_report_json
+    {"csp-report" => {}}.to_json
+  end
+end