WW-5065 Adds missing flag value
diff --git a/core/src/main/java/org/apache/struts2/StrutsConstants.java b/core/src/main/java/org/apache/struts2/StrutsConstants.java
index 6f71ce8..b48b8be 100644
--- a/core/src/main/java/org/apache/struts2/StrutsConstants.java
+++ b/core/src/main/java/org/apache/struts2/StrutsConstants.java
@@ -348,5 +348,5 @@
     public static final String STRUTS_OGNL_AUTO_GROWTH_COLLECTION_LIMIT = "struts.ognl.autoGrowthCollectionLimit";
 
     /** See {@link com.opensymphony.xwork2.config.impl.AbstractMatcher#appendNamedParameters */
-    public static final String STRUTS_MATCHER_APPEND_NAMED_PARAMETERS = "";
+    public static final String STRUTS_MATCHER_APPEND_NAMED_PARAMETERS = "struts.matcher.appendNamedParameters";
 }