diff --git a/packages/app/src/cli/services/build/steps/include-assets/copy-config-key-entry.ts b/packages/app/src/cli/services/build/steps/include-assets/copy-config-key-entry.ts
index c952cd8abf1..245466096d3 100644
--- a/packages/app/src/cli/services/build/steps/include-assets/copy-config-key-entry.ts
+++ b/packages/app/src/cli/services/build/steps/include-assets/copy-config-key-entry.ts
@@ -1,4 +1,5 @@
 import {assertPathWithinAppDir} from './assert-path-within-app.js'
+import {uniq} from '@shopify/cli-kit/common/array'
 import {joinPath, basename, relativePath, extname} from '@shopify/cli-kit/node/path'
 import {glob, copyFile, copyDirectoryContents, fileExists, mkdir, isDirectory} from '@shopify/cli-kit/node/fs'
 import {outputContent, outputDebug, outputToken} from '@shopify/cli-kit/node/output'
@@ -66,7 +67,7 @@ export async function copyConfigKeyEntry(config: {
 
   // Deduplicate: the same source path shared across multiple targets
   // should only be copied once; the pathMap entry is reused for all references.
-  const uniquePaths = [...new Set(paths)]
+  const uniquePaths = uniq(paths)
 
   // Process sequentially to avoid filesystem race conditions on shared output paths.
   const pathMap = new Map<string, string | string[]>()