diff --git a/core-jdk8/src/main/java/org/mapstruct/Mapping.java b/core-jdk8/src/main/java/org/mapstruct/Mapping.java
index 4358729e5..f8a611abc 100644
--- a/core-jdk8/src/main/java/org/mapstruct/Mapping.java
+++ b/core-jdk8/src/main/java/org/mapstruct/Mapping.java
@@ -156,6 +156,8 @@ public @interface Mapping {
      *
      * @return An expression specifying a defaultValue for the designated target property if the designated source
      * property is null
+     *
+     * @since 1.3
      */
     String defaultExpression() default "";
 
diff --git a/core/src/main/java/org/mapstruct/Mapping.java b/core/src/main/java/org/mapstruct/Mapping.java
index ebe545de6..849e8bd87 100644
--- a/core/src/main/java/org/mapstruct/Mapping.java
+++ b/core/src/main/java/org/mapstruct/Mapping.java
@@ -154,6 +154,8 @@ public @interface Mapping {
      *
      * @return An expression specifying a defaultValue for the designated target property if the designated source
      * property is null
+     *
+     * @since 1.3
      */
     String defaultExpression() default "";