diff --git a/spring-framework-reference/src/expressions.xml b/spring-framework-reference/src/expressions.xml
index 20ff8f1d58..e31e9103f5 100644
--- a/spring-framework-reference/src/expressions.xml
+++ b/spring-framework-reference/src/expressions.xml
@@ -1011,6 +1011,15 @@ tesla.setPlaceOfBirth(null);
city = parser.parseExpression("PlaceOfBirth?.City").getValue(context, String.class);
System.out.println(city); // null - does not throw NullPointerException!!!
+
+ The Elvis operator can be used to apply default values in
+ expressions, e.g. in an @Value expression:
+
+ @Value("#{systemProperties['pop3.port'] ?: 25}")
+
+ This will inject a system property pop3.port
if it
+ is defined or 25 if not.
+