diff --git a/src/core/display/Container.js b/src/core/display/Container.js
index 0da9f31..89e10a1 100644
--- a/src/core/display/Container.js
+++ b/src/core/display/Container.js
@@ -86,7 +86,7 @@
      */
     addChildAt(child, index)
     {
-        if (index <= 0 || index >= this.children.length)
+        if (index < 0 || index >= this.children.length)
         {
             throw new Error(`${child}addChildAt: The index ${index} supplied is out of bounds ${this.children.length}`);
         }