diff --git a/app/controllers/match_scores_controller.rb b/app/controllers/match_scores_controller.rb
index f5c2f34..80c18ae 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
-    params.permit(:points)
+    params.slice(:points).permit!
   end
 end
diff --git a/app/controllers/teams_controller.rb b/app/controllers/teams_controller.rb
index bf57444..522820d 100644
--- a/app/controllers/teams_controller.rb
+++ b/app/controllers/teams_controller.rb
@@ -26,6 +26,6 @@ class TeamsController < ApplicationController
   end
 
   def team_params
-    params.permit(:name)
+    params.slice(:name).permit!
   end
 end
diff --git a/app/controllers/tournaments_controller.rb b/app/controllers/tournaments_controller.rb
index d69f8d6..e43cc51 100644
--- a/app/controllers/tournaments_controller.rb
+++ b/app/controllers/tournaments_controller.rb
@@ -48,6 +48,6 @@ class TournamentsController < ApplicationController
   end
 
   def tournament_params
-    params.permit(:name, :description, :public, :teams)
+    params.slice(:name, :description, :public, :teams).permit!
   end
 end