diff --git a/SC2249.md b/SC2249.md
index 3e1bdb1..8fb2d90 100644
--- a/SC2249.md
+++ b/SC2249.md
@@ -35,7 +35,7 @@ Consider adding a default case to handle other values. If you don't know what to
 
 The example is adapted from a real world Debian init script, which due to a missing default case reports success on any misspelled command (here with underscore instead of dash):
 
-```
+```console
 $ /etc/init.d/screen-cleanup force_reload && echo success
 success
 ```
@@ -46,7 +46,7 @@ This suggestion only triggers in verbose mode (`-S verbose`).
 
 If you don't have a default case because the default should be to take no action, consider adding a comment to other humans:
 
-```
+```sh
 case "$(uname)" in
   CYGWIN*) cygwin=1;;
   MINGW*) mingw=1;;
@@ -56,7 +56,7 @@ esac
 
 If you believe that it's impossible for the expression to have any other value, it's considered good practice to add the equivalent of an `assert(0)` to fail fast if this assumption should turn out to be incorrect in the current or future versions:
 
-```
+```sh
 case "$result" in
   true)  proceed;;
   false) cancel;;