diff --git a/packages/mermaid/src/diagrams/sequence/svgDraw.js b/packages/mermaid/src/diagrams/sequence/svgDraw.js
index 1ca1c1ca8..78945bde8 100644
--- a/packages/mermaid/src/diagrams/sequence/svgDraw.js
+++ b/packages/mermaid/src/diagrams/sequence/svgDraw.js
@@ -734,7 +734,7 @@ export const insertArrowHead = function (elem) {
     .attr('markerHeight', 12)
     .attr('orient', 'auto')
     .append('path')
-    .attr('d', 'M 0 0 L 10 5 L 0 10 z'); // this is actual shape for arrowhead
+    .attr('d', 'M -1 0 L 10 5 L 0 10 z'); // this is actual shape for arrowhead
 };
 
 /**