diff --git a/packages/bot-skeleton/src/scratch/hooks/workspace_svg.js b/packages/bot-skeleton/src/scratch/hooks/workspace_svg.js
index 348c1b5130ae..08d879d69cd1 100644
--- a/packages/bot-skeleton/src/scratch/hooks/workspace_svg.js
+++ b/packages/bot-skeleton/src/scratch/hooks/workspace_svg.js
@@ -146,7 +146,7 @@ Blockly.WorkspaceSvg.prototype.cleanUp = function (x = 0, y = 0, blocks_to_clean
                 const start = (column_index - 1) * blocks_per_column;
                 const fat_neighbour_block = root_blocks
                     .slice(start, start + blocks_per_column)
-                    .reduce((a, b) => (a.getHeightWidth().width > b.getHeightWidth().width ? a : b), null);
+                    ?.reduce((a, b) => (a.getHeightWidth().width > b.getHeightWidth().width ? a : b));
 
                 let position_x = cursor_x + fat_neighbour_block.getHeightWidth().width + Blockly.BlockSvg.MIN_BLOCK_X;
                 if (!is_import) {
@@ -166,7 +166,7 @@ Blockly.WorkspaceSvg.prototype.cleanUp = function (x = 0, y = 0, blocks_to_clean
             const a_metrics = a.getRelativeToSurfaceXY().y + a.getHeightWidth().height;
             const b_metrics = b.getRelativeToSurfaceXY().y + b.getHeightWidth().height;
             return a_metrics > b_metrics ? a : b;
-        }, null);
+        });
 
         original_cursor_y =
             lowest_root_block.getRelativeToSurfaceXY().y +