diff --git a/static/brush-editor.js b/static/brush-editor.js
index 5404ec4..38d43df 100644
--- a/static/brush-editor.js
+++ b/static/brush-editor.js
@@ -5,7 +5,7 @@ const defaultBrush = `
 -- Try playing around with the numbers, 
 -- and see what happens!
 
-withDotter \d ->
+withDotter \\d ->
   stroke 8 #000 (d To)
 `.trim();