diff --git a/src/as/com/threerings/util/ArrayIterator.as b/src/as/com/threerings/util/ArrayIterator.as
index 508a25b31..daaa8b52c 100644
--- a/src/as/com/threerings/util/ArrayIterator.as
+++ b/src/as/com/threerings/util/ArrayIterator.as
@@ -40,6 +40,7 @@ public class ArrayIterator
         } else {
             _arr.splice(_lastIndex, 1);
             _lastIndex = -1;
+            _index--; // since _lastIndex is always before _index
         }
     }