diff --git a/SC2189.md b/SC2189.md
index c9fc65e..4475c85 100644
--- a/SC2189.md
+++ b/SC2189.md
@@ -18,7 +18,7 @@ ShellCheck has found a stage in a pipeline that consists of a redirection but no
 
 This is most likely to occur when deleting a command that had a redirection, but leaving a `|` behind instead of moving the redirection to a different command:
 
-```
+```sh
 # Match lines with line numbers
 nl < foo.txt | grep bar