diff --git a/app/controllers/topics_controller.rb b/app/controllers/topics_controller.rb
index 996dab4d263..15bcbb23362 100644
--- a/app/controllers/topics_controller.rb
+++ b/app/controllers/topics_controller.rb
@@ -588,9 +588,10 @@ class TopicsController < ApplicationController
       current_user,
       params[:topic_id].to_i,
       params[:topic_time].to_i,
-      (params[:timings] || []).map { |post_number, t| [post_number.to_i, t.to_i] },
+      (params[:timings] || {}).map { |post_number, t| [post_number.to_i, t.to_i] },
       mobile: view_context.mobile_view?
     )
+
     render nothing: true
   end
 
diff --git a/spec/requests/topics_controller_spec.rb b/spec/requests/topics_controller_spec.rb
index 6da482ec63b..d2e1990e3cc 100644
--- a/spec/requests/topics_controller_spec.rb
+++ b/spec/requests/topics_controller_spec.rb
@@ -4,6 +4,27 @@ RSpec.describe TopicsController do
   let(:topic) { Fabricate(:topic) }
   let(:user) { Fabricate(:user) }
 
+  describe '#timings' do
+    let(:post_1) { Fabricate(:post, topic: topic) }
+
+    it 'should record the timing' do
+      sign_in(user)
+
+      post "/topics/timings.json",
+        topic_id: topic.id,
+        topic_time: 5,
+        timings: { post_1.post_number => 2 }
+
+      expect(response).to be_success
+
+      post_timing = PostTiming.first
+
+      expect(post_timing.topic).to eq(topic)
+      expect(post_timing.user).to eq(user)
+      expect(post_timing.msecs).to eq(2)
+    end
+  end
+
   describe '#timer' do
     context 'when a user is not logged in' do
       it 'should return the right response' do