diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/InviteDelegate.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/InviteDelegate.java
index ec346a9f8..22b47a171 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/InviteDelegate.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/InviteDelegate.java
@@ -214,7 +214,8 @@ abstract class InviteDelegate extends DelegateBase
         updateChecked( items );
 
         m_lv.removeAllViews();
-        for ( InviterItem item : items ) {
+        InviterItem[] itemsArr = items.toArray( new InviterItem[items.size()] );
+        for ( InviterItem item : itemsArr ) {
             m_lv.addView( makeViewFor( itemId, item ) );
         }
     }