diff --git a/src/utils/index.ts b/src/utils/index.ts
index e87b167..a1fd37d 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -22,7 +22,7 @@ export function findSP(): Window {
   if (document.title == 'SP') return window;
   // new (SP as popup)
   const navTrees = getGamepadNavigationTrees();
-  return navTrees.find((x: any) => x.m_ID == 'root_1_').Root.Element.ownerDocument.defaultView;
+  return navTrees?.find((x: any) => x.m_ID == 'root_1_').Root.Element.ownerDocument.defaultView;
 }
 
 /**
@@ -38,5 +38,5 @@ export function getFocusNavController(): any {
 export function getGamepadNavigationTrees(): any {
   const focusNav = getFocusNavController();
   const context = focusNav.m_ActiveContext || focusNav.m_LastActiveContext;
-  return context.m_rgGamepadNavigationTrees;
+  return context?.m_rgGamepadNavigationTrees;
 }