diff --git a/core/block_render.js b/core/block_render.js
index 6cc14626de..1615f5eac6 100644
--- a/core/block_render.js
+++ b/core/block_render.js
@@ -341,11 +341,11 @@ Blockly.BlockSvg.INPUT_SHAPE_HEXAGONAL_WIDTH = 12 * Blockly.BlockSvg.GRID_UNIT;
 Blockly.BlockSvg.INPUT_SHAPE_SQUARE =
     Blockly.BlockSvg.TOP_LEFT_CORNER_START +
     Blockly.BlockSvg.TOP_LEFT_CORNER +
-    ' h ' + (10 * Blockly.BlockSvg.GRID_UNIT - 2 * Blockly.BlockSvg.CORNER_RADIUS) +
+    ' h ' + (12 * Blockly.BlockSvg.GRID_UNIT - 2 * Blockly.BlockSvg.CORNER_RADIUS) +
     Blockly.BlockSvg.TOP_RIGHT_CORNER +
     ' v ' + (8 * Blockly.BlockSvg.GRID_UNIT - 2 * Blockly.BlockSvg.CORNER_RADIUS) +
     Blockly.BlockSvg.BOTTOM_RIGHT_CORNER +
-    ' h ' + (-10 * Blockly.BlockSvg.GRID_UNIT + 2 * Blockly.BlockSvg.CORNER_RADIUS) +
+    ' h ' + (-12 * Blockly.BlockSvg.GRID_UNIT + 2 * Blockly.BlockSvg.CORNER_RADIUS) +
     Blockly.BlockSvg.BOTTOM_LEFT_CORNER +
     ' z';