diff --git a/src/Editor.tsx b/src/Editor.tsx
index e085355..b983744 100644
--- a/src/Editor.tsx
+++ b/src/Editor.tsx
@@ -248,9 +248,11 @@ class Editor extends React.Component<IEditorProps> {
     }
 
     let x = 0;
-    const lastChild: IContainerModel | undefined = parentClone.children.at(-1);
-    if (lastChild !== undefined) {
-      x = lastChild.properties.x + Number(lastChild.properties.width);
+    if (index !== 0) {
+      const lastChild: IContainerModel | undefined = parentClone.children.at(index - 1);
+      if (lastChild !== undefined) {
+        x = lastChild.properties.x + Number(lastChild.properties.width);
+      }
     }
 
     // Create the container