diff --git a/index.md b/index.md
index fb3a830..7a9c18d 100644
--- a/index.md
+++ b/index.md
@@ -54,12 +54,16 @@ Tested with [nvi](https://en.wikipedia.org/wiki/Nvi) 1.79 and 2.1.3 (unicode).
 
 ## Remove trailing whitespace from every line
 
-	:%s/\s\+$//
+<pre>
+:%s/ *$//
+</pre>
 
 
 ## Remove trailing whitespace from a block
 
-	:'k,'ls/\ *$//
+<pre>
+:'k,'ls/\ *$//
+</pre>
 
 
 ## Remove the first N-characters from every line