diff --git a/packages/core/agent-loop/tests/system-prompt-admission.spec.ts b/packages/core/agent-loop/tests/system-prompt-admission.spec.ts
index 1e58327cee..716d0e2156 100644
--- a/packages/core/agent-loop/tests/system-prompt-admission.spec.ts
+++ b/packages/core/agent-loop/tests/system-prompt-admission.spec.ts
@@ -21,7 +21,7 @@ async function harness(capable = new MockAdapter(Array.from({ length: 8 }, () =>
   await ctx.plugin(LlmRuntime)
   await ctx.plugin(SessionStore)
   await ctx.plugin(SessionProjectionRegistry)
-  await ctx.plugin(SystemPrompt, { persona: '' })
+  await ctx.plugin(SystemPrompt, { personaPrefix: '', personaSuffix: '' })
   await ctx.plugin(ToolRuntime)
   await ctx.plugin(AgentRegistry)
   await ctx.plugin(AgentLoop, { agents: [] })