diff --git a/packages/mermaid/src/dagre-wrapper/markers.js b/packages/mermaid/src/dagre-wrapper/markers.js
index 051c987f6..223e68254 100644
--- a/packages/mermaid/src/dagre-wrapper/markers.js
+++ b/packages/mermaid/src/dagre-wrapper/markers.js
@@ -176,7 +176,7 @@ const point = (elem, type) => {
     .attr('id', type + '-pointStart')
     .attr('class', 'marker ' + type)
     .attr('viewBox', '0 0 10 10')
-    .attr('refX', 0)
+    .attr('refX', 4.5)
     .attr('refY', 5)
     .attr('markerUnits', 'userSpaceOnUse')
     .attr('markerWidth', 12)