diff --git a/SC2148.md b/SC2148.md
index d825e0b..495f94d 100644
--- a/SC2148.md
+++ b/SC2148.md
@@ -7,12 +7,12 @@ Add a shebang line to the top of your script:
 Or, for scripts that will not be executed (*e.g.*, `~/.bashrc`), use a directive:
 
 ```bash
-# shellcheck shell=sh
+# shellcheck shell=bash
 ```
 
 If neither of those options are possible or desirable, you can invoke ShellCheck with the `--shell` switch:
 ```bash
-shellcheck --shell=bash without-shebang.sh
+shellcheck --shell=sh without-shebang.sh
 ```
 
 See `shellcheck --help` for a list of supported flavors.
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