diff --git a/pkg/tsdb/grafana-testdata-datasource/sims/grot3d.go b/pkg/tsdb/grafana-testdata-datasource/sims/grot3d.go
index d29da9b372a..f9fa4a6af5e 100644
--- a/pkg/tsdb/grafana-testdata-datasource/sims/grot3d.go
+++ b/pkg/tsdb/grafana-testdata-datasource/sims/grot3d.go
@@ -284,7 +284,7 @@ func (s *grot3dSim) project3DTo2D(p point3d) point2d {
 
 	return point2d{
 		x: scaledP.x*scale + s.cfg.ViewWidth/2,
-		y: scaledP.y*scale + s.cfg.ViewHeight/2,
+		y: -scaledP.y*scale + s.cfg.ViewHeight/2, // Flip Y vertically (negative Y goes up)
 	}
 }