diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 680289d..803d135 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -24,8 +24,4 @@ class ApplicationController < ActionController::API
       ]
     }, status: :forbidden
   end
-
-  def deserialize_params(opts)
-    ActiveModelSerializers::Deserialization.jsonapi_parse(params, opts)
-  end
 end
diff --git a/app/controllers/match_scores_controller.rb b/app/controllers/match_scores_controller.rb
index 2f62bfc..daffca8 100644
--- a/app/controllers/match_scores_controller.rb
+++ b/app/controllers/match_scores_controller.rb
@@ -28,6 +28,6 @@ class MatchScoresController < ApplicationController
 
   # Only allow a trusted parameter "white list" through.
   def match_score_params
-    deserialize_params only: %i[points]
+    params.require(:match_score).permit(:points)
   end
 end
diff --git a/app/controllers/matches_controller.rb b/app/controllers/matches_controller.rb
index 5687b2f..d15e841 100644
--- a/app/controllers/matches_controller.rb
+++ b/app/controllers/matches_controller.rb
@@ -3,6 +3,6 @@
 class MatchesController < ApplicationController
   # GET /matches/1
   def show
-    render json: Match.find(params[:id]), include: ['match_scores.points', 'match_scores.team'], status: status
+    render json: Match.find(params[:id]), include: ['match_scores.points', 'match_scores.team']
   end
 end
diff --git a/app/controllers/teams_controller.rb b/app/controllers/teams_controller.rb
index b61d202..9ac727e 100644
--- a/app/controllers/teams_controller.rb
+++ b/app/controllers/teams_controller.rb
@@ -26,6 +26,6 @@ class TeamsController < ApplicationController
   end
 
   def team_params
-    deserialize_params only: %i[name]
+    params.require(:team).permit(:name)
   end
 end
diff --git a/app/controllers/tournaments_controller.rb b/app/controllers/tournaments_controller.rb
index b6375a6..0bb0334 100644
--- a/app/controllers/tournaments_controller.rb
+++ b/app/controllers/tournaments_controller.rb
@@ -48,6 +48,6 @@ class TournamentsController < ApplicationController
   end
 
   def tournament_params
-    deserialize_params only: %i[name description public teams]
+    params.require(:tournament).permit(:name, :description, :public, :teams)
   end
 end