diff --git a/package-lock.json b/package-lock.json
index d701ac49c5e9..3a2075541c61 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "openlr_decoder",
-  "version": "0.2.0",
+  "version": "0.4.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 5b70bfcd451a..96b29a750275 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openlr_decoder",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "A general purpose road network OpenLR decoding solution",
   "keywords": [
     "openlr",
diff --git a/src/graph.ts b/src/graph.ts
index 8d874bab66e4..34741452c18e 100644
--- a/src/graph.ts
+++ b/src/graph.ts
@@ -4,10 +4,17 @@ import type {node, linkLookup, nodeChildLink, graphInput} from "./nodes";
 export function buildLinkLookups(nodeCollection: Array<node>) {
     const linkLookup = {};
     const graphInput = {};
-    nodeCollection.map(node => node.startLinks.map(link => addLinkToGraph(link, linkLookup, graphInput)));
+    nodeCollection.map(node => checkForEndpoints(node, linkLookup, graphInput));
     return {links: linkLookup as linkLookup, graphInput: graphInput as graphInput};
 }
 
+function checkForEndpoints(node: node, linkLookup: linkLookup, graphInput: graphInput){
+    if(node.startLinks)
+        node.startLinks.map(link => addLinkToGraph(link, linkLookup, graphInput));
+    else
+        node.endLinks.map(link => addLinkToGraph(link, linkLookup, graphInput));
+}
+
 export function getGraph(input: graphInput){
     return new Graph(input);
 }