diff --git a/lib/discourse_chat/provider/slack/slack_transcript.rb b/lib/discourse_chat/provider/slack/slack_transcript.rb
index 155baf0..f33d884 100644
--- a/lib/discourse_chat/provider/slack/slack_transcript.rb
+++ b/lib/discourse_chat/provider/slack/slack_transcript.rb
@@ -220,7 +220,11 @@ module DiscourseChat::Provider::SlackProvider
       # Build some message objects
       @messages = []
       raw_messages.each_with_index do |message, index|
+        # Only load messages
         next unless message["type"] == "message"
+        # Don't load responses to threads (if ts==thread_ts then it's the thread parent)
+        next if message["thread_ts"] && message["thread_ts"] != message["ts"]
+
         this_message = SlackMessage.new(message, self)
         @messages << this_message
       end
diff --git a/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb b/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb
index 3492210..063128a 100644
--- a/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb
+++ b/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb
@@ -28,6 +28,13 @@ RSpec.describe DiscourseChat::Provider::SlackProvider::SlackTranscript do
           "text": "So, who's interested in the new <https://meta.discourse.org|discourse plugin>?",
           "ts": "1501801629.052212"
       },
+      {
+          "type": "message",
+          "user": "U6E2W7R8C",
+          "text": "I'm interested!!",
+          "ts": "1501801634.053761",
+          "thread_ts": "1501801629.052212"
+      },
       {
             "text": "",
             "username": "Test Community",
@@ -128,6 +135,10 @@ RSpec.describe DiscourseChat::Provider::SlackProvider::SlackTranscript do
         transcript.load_chat_history
       end
 
+      it 'ignores messages in a thread' do
+        expect(transcript.messages.length).to eq(6)
+      end
+
       it 'loads in chronological order' do # API presents in reverse chronological
         expect(transcript.messages.first.ts).to eq('1501093331.439776')
       end