From c4efe2812f3356e208b898e1b101b2148ee96824 Mon Sep 17 00:00:00 2001
From: Gavin Nishizawa <gavin@terrastruct.com>
Date: Thu, 26 Jan 2023 18:39:33 -0800
Subject: [PATCH] check message ref is group

---
 d2graph/seqdiagram.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/d2graph/seqdiagram.go b/d2graph/seqdiagram.go
index ebbb9302c..15d7bc266 100644
--- a/d2graph/seqdiagram.go
+++ b/d2graph/seqdiagram.go
@@ -100,7 +100,9 @@ func (e *Edge) ContainedBy(obj *Object) bool {
 
 func (e *Edge) GetGroup() *Object {
 	for _, ref := range e.References {
-		return ref.ScopeObj
+		if ref.ScopeObj.IsSequenceDiagramGroup() {
+			return ref.ScopeObj
+		}
 	}
 	return nil
 }