diff --git a/app/lib/advanced_text_formatter.rb b/app/lib/advanced_text_formatter.rb
index 728400819c7..dcaf34b9158 100644
--- a/app/lib/advanced_text_formatter.rb
+++ b/app/lib/advanced_text_formatter.rb
@@ -8,7 +8,7 @@ class AdvancedTextFormatter < TextFormatter
     end
 
     def block_code(code, _language)
-      <<~HTML.squish
+      <<~HTML
         <pre><code>#{ERB::Util.h(code).gsub("\n", '<br/>')}</code></pre>
       HTML
     end
diff --git a/spec/lib/advanced_text_formatter_spec.rb b/spec/lib/advanced_text_formatter_spec.rb
index ea1a9570d0c..3255fc9271a 100644
--- a/spec/lib/advanced_text_formatter_spec.rb
+++ b/spec/lib/advanced_text_formatter_spec.rb
@@ -40,6 +40,10 @@ RSpec.describe AdvancedTextFormatter do
         it 'formats code using <pre> and <code>' do
           is_expected.to include '<pre><code>int main'
         end
+
+        it 'does not strip leading spaces' do
+          is_expected.to include '>  return 0'
+        end
       end
 
       context 'given some quote' do