diff --git a/elixir.md b/elixir.md
index 42738b331..ccaecea57 100644
--- a/elixir.md
+++ b/elixir.md
@@ -686,8 +686,8 @@ exp = ~r/hello/i
 ```elixir
 ~r/regexp/
 ~w(list of strings)
-~s[strings with #{interpolation} and \x20 escape codes]
-~S[no interpolation and no escapes]
+~s|strings with #{interpolation} and \x20 escape codes|
+~S|no interpolation and no escapes|
 ~c(charlist)
 ```