diff --git a/src/commands/onboard-memory.ts b/src/commands/onboard-memory.ts
index 8b4e101367e..59cf1f58889 100644
--- a/src/commands/onboard-memory.ts
+++ b/src/commands/onboard-memory.ts
@@ -51,7 +51,7 @@ export async function setupMemoryOptimization(
     ],
   });
 
-  const choices = new Set(selected.filter((v) => v !== "__skip__"));
+  const choices = new Set((selected ?? []).filter((v) => v !== "__skip__"));
   if (choices.size === 0) {
     return cfg;
   }