diff --git a/src/accessibility/gridOutput.js b/src/accessibility/gridOutput.js
index 5b52a23eb8..26868518f5 100644
--- a/src/accessibility/gridOutput.js
+++ b/src/accessibility/gridOutput.js
@@ -65,7 +65,9 @@ function _gridMap(idT, ingredients) {
 
       // Check if shape is in canvas, skip if not
       if(
+        ingredients[x][y].loc.locY >= 0 &&
         ingredients[x][y].loc.locY < cells.length &&
+        ingredients[x][y].loc.locX >= 0 &&
         ingredients[x][y].loc.locX < cells[ingredients[x][y].loc.locY].length
       ){
         //if empty cell of location of shape is undefined