diff --git a/src/java/scheme/ui/HudFragment.java b/src/java/scheme/ui/HudFragment.java
index 322a448..f29acc4 100644
--- a/src/java/scheme/ui/HudFragment.java
+++ b/src/java/scheme/ui/HudFragment.java
@@ -300,9 +300,11 @@ private void setItem(Table table, Item item) {
 
     private void updateBlocks() {
         app.post(() -> { // waiting for blockfrag rebuild
-            block[0] = ui.hudGroup.find("inputTable").parent.parent.parent;
+            block[0] = ui.hudGroup.find("inputTable");
             block[1] = ui.hudGroup.find("statustable");
             block[2] = ui.hudGroup.find("editor");
+
+            if (block[0] != null) block[0] = block[0].parent.parent.parent;
         });
     }