diff --git a/torchlight.config.js b/torchlight.config.js
index 5013efd..fb4f992 100644
--- a/torchlight.config.js
+++ b/torchlight.config.js
@@ -30,11 +30,11 @@ module.exports = {
 
     // If there are any diff indicators for a line, put them
     // in place of the line number to save horizontal space.
-    diffIndicatorsInPlaceOfLineNumbers: true
+    diffIndicatorsInPlaceOfLineNumbers: true,
 
     // When lines are collapsed, this is the text that will
     // be shown to indicate that they can be expanded.
-    // summaryCollapsedIndicator: '...',
+    summaryCollapsedIndicator: 'Click to expand...',
   },
 
   // Options for the highlight command.