diff --git a/codex-rs/core/src/context/multi_agent_mode_instructions.rs b/codex-rs/core/src/context/multi_agent_mode_instructions.rs
index 9c8f5ad5ed..9773875d89 100644
--- a/codex-rs/core/src/context/multi_agent_mode_instructions.rs
+++ b/codex-rs/core/src/context/multi_agent_mode_instructions.rs
@@ -3,7 +3,7 @@ use codex_protocol::config_types::MultiAgentMode;
 use codex_protocol::protocol::MULTI_AGENT_MODE_CLOSE_TAG;
 use codex_protocol::protocol::MULTI_AGENT_MODE_OPEN_TAG;
 
-const EXPLICIT_REQUEST_ONLY_MULTI_AGENT_MODE_TEXT: &str = "Do not spawn sub-agents unless the user or applicable AGENTS.md/skill instructions explicitly ask for sub-agents, delegation, or parallel agent work.";
+const EXPLICIT_REQUEST_ONLY_MULTI_AGENT_MODE_TEXT: &str = "Any earlier instruction enabling proactive multi-agent delegation no longer applies. Do not spawn sub-agents unless the user or applicable AGENTS.md/skill instructions explicitly ask for sub-agents, delegation, or parallel agent work.";
 const PROACTIVE_MULTI_AGENT_MODE_TEXT: &str = "Proactive multi-agent delegation is active. Any earlier instruction requiring an explicit user request before spawning sub-agents no longer applies. Use sub-agents when parallel work would materially improve speed or quality. This mode remains active until a later multi-agent mode developer message changes it.";
 
 #[derive(Debug, Clone, PartialEq, Eq)]
diff --git a/codex-rs/core/tests/suite/multi_agent_mode.rs b/codex-rs/core/tests/suite/multi_agent_mode.rs
index fd6cdb9ddd..85ce409144 100644
--- a/codex-rs/core/tests/suite/multi_agent_mode.rs
+++ b/codex-rs/core/tests/suite/multi_agent_mode.rs
@@ -22,7 +22,7 @@ use pretty_assertions::assert_eq;
 use serde_json::Value;
 use serde_json::json;
 
-const NO_SPAWN_TEXT: &str = "Do not spawn sub-agents unless the user or applicable AGENTS.md/skill instructions explicitly ask for sub-agents, delegation, or parallel agent work.";
+const NO_SPAWN_TEXT: &str = "Any earlier instruction enabling proactive multi-agent delegation no longer applies. Do not spawn sub-agents unless the user or applicable AGENTS.md/skill instructions explicitly ask for sub-agents, delegation, or parallel agent work.";
 const PROACTIVE_TEXT: &str = "Proactive multi-agent delegation is active.";
 const CUSTOM_MODE_HINT_TEXT: &str = "Use the configured delegation policy.";