diff --git a/src/agent/promptAssets.ts b/src/agent/promptAssets.ts
index 715c76a..aa9d9d0 100644
--- a/src/agent/promptAssets.ts
+++ b/src/agent/promptAssets.ts
@@ -68,8 +68,8 @@ export const SYSTEM_PROMPTS: SystemPromptOption[] = [
   {
     id: "default",
     label: "Default",
-    description: "Alias for letta-claude",
-    content: lettaAnthropicPrompt,
+    description: "Letta-tuned system prompt",
+    content: systemPrompt,
     isDefault: true,
     isFeatured: true,
   },
diff --git a/src/types/protocol.ts b/src/types/protocol.ts
index 083880e..a27c277 100644
--- a/src/types/protocol.ts
+++ b/src/types/protocol.ts
@@ -42,7 +42,7 @@ export type {
  * Use this to select a built-in system prompt with optional appended text.
  *
  * Available presets (validated at runtime by CLI):
- * - 'default' - Alias for letta-claude
+ * - 'default' - Letta-tuned system prompt
  * - 'letta-claude' - Full Letta Code prompt (Claude-optimized)
  * - 'letta-codex' - Full Letta Code prompt (Codex-optimized)
  * - 'letta-gemini' - Full Letta Code prompt (Gemini-optimized)