diff --git a/SC2154.md b/SC2154.md
index ebe1cc5..9bd3db7 100644
--- a/SC2154.md
+++ b/SC2154.md
@@ -52,4 +52,4 @@ Note: This message only triggers for variables with lowercase characters in thei
 
 ShellCheck intentionally does not attempt to figure out runtime or dynamic assignments like with `source "$(date +%F).sh"` or `eval var=value`. See [[SC2034]] for an extended discussion of why this is the case.
 
-If you know for a fact that the variable is set, you can use `${var:?}` to fail if the variable is unset (or empty), or explicitly initialize/declare it with `var=""` or `declare var`. You can also disable the message with a [[directive]].
+If you know for a fact that the variable is set, you can use `${var:?}` to fail if the variable is unset (or empty), initialize it to a default value if uninitialized with `: "${var:=}"`, or explicitly initialize/declare it with `var=""` or `declare var`. You can also disable the message with a [[directive]].