diff --git a/src/commands/download/firefox.ts b/src/commands/download/firefox.ts
index e23d9e2..6f0773b 100644
--- a/src/commands/download/firefox.ts
+++ b/src/commands/download/firefox.ts
@@ -127,8 +127,8 @@ export async function downloadInternals({ version, force }: { version: string, f
   }
 
   // If the engine directory is empty, we should delete it.
-  const engineIsEmpty = await readdir(ENGINE_DIR).then((files) => files.length === 0)
-  if (existsSync(ENGINE_DIR) && engineIsEmpty) {
+  const engineIsEmpty = existsSync(ENGINE_DIR) && await readdir(ENGINE_DIR).then((files) => files.length === 0)
+  if (engineIsEmpty) {
     log.info("'engine/' is empty, it...")
     rmSync(ENGINE_DIR, { recursive: true })
   }