diff --git a/simpleexample2/core/src/main/java/simpleex/core/MetaData.java b/simpleexample2/core/src/main/java/simpleex/core/MetaData.java
index e81a250fecf788d2a0f89490591f86aafccb32fd..a1357c06adf4ca5ef6fae044ac9cc14a1cc49880 100644
--- a/simpleexample2/core/src/main/java/simpleex/core/MetaData.java
+++ b/simpleexample2/core/src/main/java/simpleex/core/MetaData.java
@@ -21,7 +21,7 @@ public class MetaData {
   /**
    * the list containing standard properties associated to location metadata
    */
-  public final static List<String> STD_PROPERTIES = Collections.unmodifiableList(Arrays.asList(NAME_PROPERTY, DESCRIPTION_PROPERTY));
+  public final static Collection<String> STD_PROPERTIES = List.of(NAME_PROPERTY, DESCRIPTION_PROPERTY);
  
   
   private Collection<String> tags;