diff --git a/lib/captain/summary_service.rb b/lib/captain/summary_service.rb
index 16ee57b51..030c0e510 100644
--- a/lib/captain/summary_service.rb
+++ b/lib/captain/summary_service.rb
@@ -5,7 +5,7 @@ class Captain::SummaryService < Captain::BaseTaskService
     make_api_call(
       model: GPT_MODEL,
       messages: [
-        { role: 'system', content: prompt_from_file('summary') },
+        { role: 'system', content: system_prompt },
         { role: 'user', content: conversation.to_llm_text(include_contact_details: false) }
       ]
     )
@@ -13,6 +13,14 @@ class Captain::SummaryService < Captain::BaseTaskService
 
   private
 
+  def system_prompt
+    <<~PROMPT
+      #{prompt_from_file('summary')}
+
+      Reply in #{account.locale_english_name}.
+    PROMPT
+  end
+
   def event_name
     'summarize'
   end
diff --git a/lib/integrations/openai/openai_prompts/summary.liquid b/lib/integrations/openai/openai_prompts/summary.liquid
index 4ec5ffd5b..1ac05419a 100644
--- a/lib/integrations/openai/openai_prompts/summary.liquid
+++ b/lib/integrations/openai/openai_prompts/summary.liquid
@@ -17,7 +17,7 @@ Make sure you strongly adhere to the following rules when generating the summary
 13. Do not insert your own opinions about the conversation.
 
 
-Reply in the user's language, as a markdown of the following format.
+Use markdown with the following format. Translate all section headings to match the reply language:
 
 **Customer Intent**
 
diff --git a/spec/lib/captain/summary_service_spec.rb b/spec/lib/captain/summary_service_spec.rb
index 6da3f122b..c5ec50687 100644
--- a/spec/lib/captain/summary_service_spec.rb
+++ b/spec/lib/captain/summary_service_spec.rb
@@ -35,7 +35,8 @@ RSpec.describe Captain::SummaryService do
       expect(service).to receive(:make_api_call) do |args|
         expect(args[:messages].length).to eq(2)
         expect(args[:messages][0][:role]).to eq('system')
-        expect(args[:messages][0][:content]).to eq('Summarize this')
+        expect(args[:messages][0][:content]).to include('Summarize this')
+        expect(args[:messages][0][:content]).to include("Reply in #{account.locale_english_name}")
         expect(args[:messages][1][:role]).to eq('user')
         expect(args[:messages][1][:content]).to be_a(String)
         { message: 'Summary' }