diff --git a/src/util.ts b/src/util.ts
index c73a84f..11e467e 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -92,17 +92,6 @@ export function align(i: number, align: number) {
 	return o ? align - o + i : i;
 }
 
-/**
- * Get ArrayBuffer from Buffer.
- *
- * @param buffer Buffer instance.
- * @returns ArrayBuffer copy.
- */
-export function bufferToArrayBuffer(buffer: Readonly<Buffer>) {
-	const {byteOffset, byteLength} = buffer;
-	return buffer.buffer.slice(byteOffset, byteOffset + byteLength);
-}
-
 /**
  * Get launcher data for an ID.
  *
diff --git a/src/util/windows.ts b/src/util/windows.ts
index 23c280c..9201fae 100644
--- a/src/util/windows.ts
+++ b/src/util/windows.ts
@@ -8,7 +8,7 @@ import {
 	Data
 } from '@shockpkg/resedit';
 
-import {align, bufferToArrayBuffer, launcher} from '../util';
+import {align, launcher} from '../util';
 
 // IMAGE_DATA_DIRECTORY indexes.
 const IDD_RESOURCE = 2;
@@ -162,7 +162,7 @@ function exeUpdateSizes(exe: NtExecutable) {
  * @param iconData Icon data.
  */
 function rsrcPatchIcon(rsrc: NtExecutableResource, iconData: Readonly<Buffer>) {
-	const ico = Data.IconFile.from(bufferToArrayBuffer(iconData));
+	const ico = Data.IconFile.from(iconData);
 	for (const iconGroup of Resource.IconGroupEntry.fromEntries(rsrc.entries)) {
 		Resource.IconGroupEntry.replaceIconsForResource(
 			rsrc.entries,