diff --git a/lib/coverband/utils/html_formatter.rb b/lib/coverband/utils/html_formatter.rb
index 7e5bedb1..562337b5 100644
--- a/lib/coverband/utils/html_formatter.rb
+++ b/lib/coverband/utils/html_formatter.rb
@@ -169,7 +169,16 @@ def shortened_filename(source_file)
 
       def link_to_source_file(source_file)
         data_loader_url = "#{base_path}load_file_details?filename=#{source_file.filename}"
-        %(<a href="##{id source_file}" class="src_link" title="#{shortened_filename source_file}" data-loader-url="#{data_loader_url}" onclick="src_link_click(this)">#{shortened_filename source_file}</a>)
+        %(<a href="##{id source_file}" class="src_link" title="#{shortened_filename source_file}" data-loader-url="#{data_loader_url}" onclick="src_link_click(this)">#{truncate(shortened_filename(source_file))}</a>)
+      end
+
+      def truncate(text, length: 50)
+        if text.length <= length
+          text
+        else
+          omission = "..."
+          "#{text[0, length - omission.length]}#{omission}"
+        end
       end
     end
   end