diff --git a/src/parser.ts b/src/parser.ts
index 535399d..bfae2ff 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -149,7 +149,8 @@ export function getModelBufferContents(model: BundleUnit): PartitionedBundle {
 	const rawBundle = removeHidden(Object.keys(model)).reduce<BundleUnit>((acc, current) => {
 		// Checking if current file is one of the autogenerated ones or if its
 		// content is not available
-		if (/(manifest|signature)/.test(current) || !rawBundle[current]) {
+
+		if (/(manifest|signature)/.test(current) || !model[current]) {
 			return acc;
 		}