diff --git a/src/js/dialogs/sandbox.js b/src/js/dialogs/sandbox.js
index 4e9719b7..0cc72693 100644
--- a/src/js/dialogs/sandbox.js
+++ b/src/js/dialogs/sandbox.js
@@ -22,9 +22,9 @@ exports.dialog = {
         '',
         'PPS: GitHub has started naming the default branch `main` instead of `master` ',
         'to migrate away from biased terminology [(more details available here)](https://github.com/github/renaming). ',
-	'In accordance with this industry-wide movement, we have also updated "Learn Git Branching" to ',
-	'use `main` instead of `master` in our lessons. This rename should be fairly consistent by ',
-	'now but if you notice any errors, feel free to submit a PR (or open an issue).'
+        'In accordance with this industry-wide movement, we have also updated "Learn Git Branching" to ',
+        'use `main` instead of `master` in our lessons. This rename should be fairly consistent by ',
+        'now but if you notice any errors, feel free to submit a PR (or open an issue).'
       ]
     }
   }],