diff --git a/test/e2e/set-manifest-flags.ts b/test/e2e/set-manifest-flags.ts
index c09d69cf677e..29a12d569bae 100644
--- a/test/e2e/set-manifest-flags.ts
+++ b/test/e2e/set-manifest-flags.ts
@@ -42,7 +42,9 @@ function getFlagsFromGitMessage(): object | undefined {
 }
 
 // Alter the manifest with CircleCI environment variables and custom flags
-export function setManifestFlags(flags: ManifestFlags = {}) {
+export function setManifestFlags(_flags: ManifestFlags = {}) {
+  let flags = _flags;
+
   if (process.env.CIRCLECI) {
     flags.circleci = {
       enabled: true,