diff --git a/packages/theme/src/cli/services/check.ts b/packages/theme/src/cli/services/check.ts
index 090eb9ec370..c7f74076327 100644
--- a/packages/theme/src/cli/services/check.ts
+++ b/packages/theme/src/cli/services/check.ts
@@ -2,6 +2,7 @@ import {fileExists, readFileSync, writeFile} from '@shopify/cli-kit/node/fs'
 import {outputResult, outputInfo, outputSuccess} from '@shopify/cli-kit/node/output'
 import {joinPath} from '@shopify/cli-kit/node/path'
 import {renderInfo} from '@shopify/cli-kit/node/ui'
+import {uniq} from '@shopify/cli-kit/common/array'
 import {
   Severity,
   applyFixToString,
@@ -292,7 +293,7 @@ export async function outputActiveConfig(themeRoot: string, configPath?: string,
 
     // Depending on how the configs were merged during loadConfig, there may be
     // duplicate patterns to ignore. We can clean them before outputting.
-    ignore: [...new Set(ignore)],
+    ignore: uniq(ignore ?? []),
 
     rootUri,
 
@@ -307,7 +308,7 @@ export async function outputActiveChecks(root: string, configPath?: string, envi
   const {settings, ignore, checks} = await loadConfig(configPath, root)
   // Depending on how the configs were merged during loadConfig, there may be
   // duplicate patterns to ignore. We can clean them before outputting.
-  const ignorePatterns = [...new Set(ignore)]
+  const ignorePatterns = uniq(ignore ?? [])
 
   const checkCodes = Object.keys(settings)