diff --git a/package.json b/package.json
index f1aedb6..becc61c 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "engines": {
     "node": ">=16"
   },
-  "version": "1.4.0",
+  "version": "1.4.1",
   "description": "A GLSL ES 1.0 and 3.0 parser and preprocessor that can preserve whitespace and comments",
   "scripts": {
     "prepare": "npm run build && ./prepublish.sh",
diff --git a/src/ast/node.ts b/src/ast/node.ts
index b42d73a..dc833ad 100644
--- a/src/ast/node.ts
+++ b/src/ast/node.ts
@@ -12,7 +12,7 @@ export type LocationObject = {
 };
 
 export interface BaseNode {
-  location: LocationObject;
+  location?: LocationObject;
 }
 
 export interface LiteralNode extends BaseNode {