diff --git a/core/renderers/block_rendering_rewrite/block_render_draw.js b/core/renderers/block_rendering_rewrite/block_render_draw.js
index 2e80b5d98..fd337ed8a 100644
--- a/core/renderers/block_rendering_rewrite/block_render_draw.js
+++ b/core/renderers/block_rendering_rewrite/block_render_draw.js
@@ -214,8 +214,7 @@ Blockly.blockRendering.Drawer.prototype.drawStatementInput_ = function(row) {
   var innerTopLeftCorner =
       input.notchShape.pathRight +
       Blockly.utils.svgPaths.lineOnAxis('h',
-          -(Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT -
-              Blockly.blockRendering.constants.INSIDE_CORNERS.width)) +
+          -(input.notchOffset - Blockly.blockRendering.constants.INSIDE_CORNERS.width)) +
       Blockly.blockRendering.constants.INSIDE_CORNERS.pathTop;
 
   var innerHeight =
@@ -420,8 +419,7 @@ Blockly.blockRendering.Drawer.prototype.positionInlineInputConnection_ = functio
 Blockly.blockRendering.Drawer.prototype.positionStatementInputConnection_ = function(row) {
   var input = row.getLastInput();
   if (input.connection) {
-    var connX = row.xPos + row.statementEdge +
-        Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT;
+    var connX = row.xPos + row.statementEdge + input.notchOffset;
     if (this.info_.RTL) {
       connX *= -1;
     }
@@ -457,7 +455,7 @@ Blockly.blockRendering.Drawer.prototype.positionExternalValueConnection_ = funct
 Blockly.blockRendering.Drawer.prototype.positionPreviousConnection_ = function() {
   var topRow = this.info_.topRow;
   if (topRow.connection) {
-    var x = topRow.xPos + Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT;
+    var x = topRow.xPos + topRow.notchOffset;
     var connX = (this.info_.RTL ? -x : x);
     topRow.connection.connectionModel.setOffsetInBlock(connX, 0);
   }
diff --git a/core/renderers/block_rendering_rewrite/block_render_info.js b/core/renderers/block_rendering_rewrite/block_render_info.js
index 9565e57ac..d8d79757e 100644
--- a/core/renderers/block_rendering_rewrite/block_render_info.js
+++ b/core/renderers/block_rendering_rewrite/block_render_info.js
@@ -403,26 +403,26 @@ Blockly.blockRendering.RenderInfo.prototype.getInRowSpacing_ = function(prev, ne
     }
     // Spacing between a square corner and a previous or next connection
     if (next.isPreviousConnection()) {
-      return Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT;
+      return next.notchOffset;
     } else if (next.isNextConnection()) {
       // Next connections are shifted slightly to the left (in both LTR and RTL)
       // to make the dark path under the previous connection show through.
       var offset = (this.RTL ? 1 : -1) *
           Blockly.blockRendering.constants.DARK_PATH_OFFSET / 2;
-      return Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT + offset;
+      return next.notchOffset + offset;
     }
   }
 
   // Spacing between a rounded corner and a previous or next connection.
   if (prev.isRoundedCorner()) {
     if (next.isPreviousConnection()) {
-      return Blockly.blockRendering.constants.NOTCH_OFFSET_ROUNDED_CORNER_PREV;
+      return next.notchOffset - Blockly.blockRendering.constants.CORNER_RADIUS;
     } else if (next.isNextConnection()) {
       // Next connections are shifted slightly to the left (in both LTR and RTL)
       // to make the dark path under the previous connection show through.
       var offset = (this.RTL ? 1 : -1) *
           Blockly.blockRendering.constants.DARK_PATH_OFFSET / 2;
-      return Blockly.blockRendering.constants.NOTCH_OFFSET_ROUNDED_CORNER_PREV + offset;
+      return next.notchOffset - Blockly.blockRendering.constants.CORNER_RADIUS + offset;
     }
   }
 
diff --git a/core/renderers/block_rendering_rewrite/block_rendering_constants.js b/core/renderers/block_rendering_rewrite/block_rendering_constants.js
index f39b06718..4a896d65c 100644
--- a/core/renderers/block_rendering_rewrite/block_rendering_constants.js
+++ b/core/renderers/block_rendering_rewrite/block_rendering_constants.js
@@ -74,14 +74,6 @@ Blockly.blockRendering.constants.CORNER_RADIUS = 8;
 Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT =
     Blockly.blockRendering.constants.NOTCH_WIDTH;
 
-// This is the width from where a rounded corner ends to where a previous
-// connection starts.
-// The position of the notch should not change as the rounded corner decreases
-// in radius.
-Blockly.blockRendering.constants.NOTCH_OFFSET_ROUNDED_CORNER_PREV =
-    Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT -
-    Blockly.blockRendering.constants.CORNER_RADIUS;
-
 Blockly.blockRendering.constants.STATEMENT_BOTTOM_SPACER = 5;
 Blockly.blockRendering.constants.STATEMENT_INPUT_PADDING_LEFT = 20;
 Blockly.blockRendering.constants.BETWEEN_STATEMENT_PADDING_Y = 4;
diff --git a/core/renderers/block_rendering_rewrite/measurables.js b/core/renderers/block_rendering_rewrite/measurables.js
index 6905df843..db4c82fb5 100644
--- a/core/renderers/block_rendering_rewrite/measurables.js
+++ b/core/renderers/block_rendering_rewrite/measurables.js
@@ -154,8 +154,7 @@ Blockly.blockRendering.StatementInput = function(input) {
       this.height -= this.notchShape.height;
     }
   }
-  this.width = Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT +
-      this.notchShape.width;
+  this.width = this.notchOffset + this.notchShape.width;
 };
 goog.inherits(Blockly.blockRendering.StatementInput,
     Blockly.blockRendering.Input);
diff --git a/core/renderers/measurables/base.js b/core/renderers/measurables/base.js
index bf2b414a8..45e63742f 100644
--- a/core/renderers/measurables/base.js
+++ b/core/renderers/measurables/base.js
@@ -63,6 +63,14 @@ Blockly.blockRendering.Measurable.prototype.connectionShape =
 Blockly.blockRendering.Measurable.prototype.notchShape =
     Blockly.blockRendering.constants.NOTCH;
 
+/**
+ * The offset from the left side of a block or the inside of a statement input
+ * to the left side of the connection notch.
+ * @type {number}
+ */
+Blockly.blockRendering.Measurable.prototype.notchOffset =
+    Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT;
+
 // TODO: We may remove these helper functions if all of them end up being direct
 // checks against types.
 
diff --git a/core/renderers/measurables/rows.js b/core/renderers/measurables/rows.js
index 5d432fbdd..d61feca0f 100644
--- a/core/renderers/measurables/rows.js
+++ b/core/renderers/measurables/rows.js
@@ -155,6 +155,14 @@ Blockly.blockRendering.Row = function() {
 Blockly.blockRendering.Row.prototype.notchShape =
     Blockly.blockRendering.constants.NOTCH;
 
+/**
+ * The offset from the left side of a block or the inside of a statement input
+ * to the left side of the connection notch.
+ * @type {number}
+ */
+Blockly.blockRendering.Row.prototype.notchOffset =
+    Blockly.blockRendering.constants.NOTCH_OFFSET_LEFT;
+
 /**
  * Inspect all subcomponents and populate all size properties on the row.
  * @package