diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6af3805d..11239f39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 - Fixed parseCIRCexplorer so the exon/intron indices in variant IDs are sorted correctly.
 
+- Fixed `callVariant` of 'no reference out node found'. #842
+
 ## [1.2.1] - 2023-10-05
 
 ### Add
diff --git a/moPepGen/svgraph/ThreeFrameTVG.py b/moPepGen/svgraph/ThreeFrameTVG.py
index 0625ec8c..49471e1b 100644
--- a/moPepGen/svgraph/ThreeFrameTVG.py
+++ b/moPepGen/svgraph/ThreeFrameTVG.py
@@ -201,7 +201,7 @@ def is_out_bond_to_any_root(self, node:TVGNode):
     @staticmethod
     def is_reference_edge(in_node:TVGNode, out_node:TVGNode):
         """ checks if this is a reference edge """
-        if out_node.is_reference() and out_node.subgraph_id == in_node.subgraph_id:
+        if out_node.is_reference() and out_node.subgraph_id == in_node.get_last_subgraph_id():
             return True
         in_vars = {x.variant for x in in_node.variants}
         out_vars = {x.variant for x in out_node.variants}