diff --git a/packages/mermaid/src/diagrams/sequence/svgDraw.js b/packages/mermaid/src/diagrams/sequence/svgDraw.js
index 32f268ea4..4d2a574d1 100644
--- a/packages/mermaid/src/diagrams/sequence/svgDraw.js
+++ b/packages/mermaid/src/diagrams/sequence/svgDraw.js
@@ -1110,13 +1110,13 @@ export const insertSolidTopArrowHead = function (elem) {
     .append('marker')
     .attr('id', 'solidTopArrowHead')
     .attr('refX', 7.9)
-    .attr('refY', 5.25)
+    .attr('refY', 7.25)
     .attr('markerUnits', 'userSpaceOnUse')
     .attr('markerWidth', 12)
     .attr('markerHeight', 12)
     .attr('orient', 'auto-start-reverse')
     .append('path')
-    .attr('d', 'M 0 -0.25 L 10 6 L 0 6 z'); // this is actual shape for arrowhead
+    .attr('d', 'M 0 0 L 10 8 L 0 8 z'); // this is actual shape for arrowhead
 };
 
 export const insertSolidBottomArrowHead = function (elem) {
@@ -1125,13 +1125,13 @@ export const insertSolidBottomArrowHead = function (elem) {
     .append('marker')
     .attr('id', 'solidBottomArrowHead')
     .attr('refX', 7.9)
-    .attr('refY', 4.7)
+    .attr('refY', 0.75)
     .attr('markerUnits', 'userSpaceOnUse')
     .attr('markerWidth', 12)
     .attr('markerHeight', 12)
     .attr('orient', 'auto-start-reverse')
     .append('path')
-    .attr('d', 'M 0.1 10 L 10 4 L 0 4 z');
+    .attr('d', 'M 0 0 L 10 0 L 0 8 z');
 };
 
 export const insertStickTopArrowHead = function (elem) {
@@ -1139,14 +1139,14 @@ export const insertStickTopArrowHead = function (elem) {
     .append('defs')
     .append('marker')
     .attr('id', ' stickTopArrowHead')
-    .attr('refX', 10.5)
-    .attr('refY', 10)
+    .attr('refX', 7.5)
+    .attr('refY', 7)
     .attr('markerUnits', 'userSpaceOnUse')
     .attr('markerWidth', 12)
     .attr('markerHeight', 12)
     .attr('orient', 'auto-start-reverse')
     .append('path')
-    .attr('d', 'M 0 0 L 10 10')
+    .attr('d', 'M 0 0 L 7 7')
     .attr('stroke', 'black')
     .attr('stroke-width', 1.5)
     .attr('fill', 'none');
@@ -1157,14 +1157,14 @@ export const insertStickBottomArrowHead = function (elem) {
     .append('defs')
     .append('marker')
     .attr('id', ' stickBottomArrowHead')
-    .attr('refX', 10)
-    .attr('refY', 5.25)
+    .attr('refX', 7.5)
+    .attr('refY', 0)
     .attr('markerUnits', 'userSpaceOnUse')
     .attr('markerWidth', 12)
     .attr('markerHeight', 12)
     .attr('orient', 'auto-start-reverse')
     .append('path')
-    .attr('d', 'M 10 5 L 0 10') // Diagonal line down from (10,5) to (0,10)
+    .attr('d', 'M 0 7 L 7 0')
     .attr('stroke', 'black')
     .attr('stroke-width', 1.5)
     .attr('fill', 'none');