diff --git a/src/App.svelte b/src/App.svelte
index a2cd128e..01d561b4 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -1534,7 +1534,7 @@ Please include a link to this sheet in the email to assist in debugging the prob
   }
 
 
-  function loadInsertSheetModal(e: {index: number} ) {
+  function loadInsertSheetModal(e: {detail: {index: number}} ) {
     retrieveRecentSheets();
 
     modalInfo = {
@@ -1542,7 +1542,7 @@ Please include a link to this sheet in the email to assist in debugging the prob
       state: "insertSheet",
       heading: "Insert a Sheet",
       url: "",
-      insertionLocation: e.index
+      insertionLocation: e.detail.index
     };
   }
 
diff --git a/src/ButtonBar.svelte b/src/ButtonBar.svelte
index 59db0012..58ae5b5b 100644
--- a/src/ButtonBar.svelte
+++ b/src/ButtonBar.svelte
@@ -15,7 +15,7 @@
   interface Props {
     index: number;
     last?: boolean;
-    insertSheet: (arg: {index: number}) => void;
+    insertSheet: (arg: {detail: {index: number}}) => void;
   }
 
   let {
@@ -25,7 +25,7 @@
   }: Props = $props();
 
   function dispatchInsertSheet(index) {
-    insertSheet({index: index});
+    insertSheet({detail: {index: index}});
   }
 
   function mobileInsert() {
diff --git a/src/CellList.svelte b/src/CellList.svelte
index fac8239f..4babf11b 100644
--- a/src/CellList.svelte
+++ b/src/CellList.svelte
@@ -4,7 +4,7 @@
   import ButtonBar from "./ButtonBar.svelte";
 
   interface Props {
-    insertSheet: (arg: {index: number}) => void;
+    insertSheet: (arg: {detail: {index: number}}) => void;
   }
 
   let { insertSheet }: Props = $props(); 
@@ -213,7 +213,7 @@
         <Cell
           index={i}
           on:startDrag={startDrag}
-          on:insertSheet 
+          on:insertSheet={insertSheet}
           on:updateNumberFormat
           on:generateCode
           on:insertMathCellAfter