diff --git a/repository/src/main/java/org/alfresco/repo/site/SiteMembership.java b/repository/src/main/java/org/alfresco/repo/site/SiteMembership.java
index 6c93cb6aea..02bd161f74 100644
--- a/repository/src/main/java/org/alfresco/repo/site/SiteMembership.java
+++ b/repository/src/main/java/org/alfresco/repo/site/SiteMembership.java
@@ -32,6 +32,7 @@ import org.alfresco.util.Pair;
 
 import java.util.Comparator;
 import java.util.List;
+import java.util.Optional;
 
 /**
  * Conveys information for a member of a site.