diff --git a/src/spreadsheet/spreadsheet.ts b/src/spreadsheet/spreadsheet.ts
index e3f874b..ef080fc 100644
--- a/src/spreadsheet/spreadsheet.ts
+++ b/src/spreadsheet/spreadsheet.ts
@@ -152,9 +152,9 @@ export class SpreadsheetTable extends HTMLElement {
   static tagName = 's-table';
 
   static register() {
-    customElements.define(this.tagName, this);
     SpreadsheetCell.register();
     SpreadsheetHeader.register();
+    customElements.define(this.tagName, this);
   }
 
   #shadow = this.attachShadow({ mode: 'open' });