diff --git a/codex-rs/core/src/session/inject.rs b/codex-rs/core/src/session/inject.rs
index b94cfe4de..64d4aaade 100644
--- a/codex-rs/core/src/session/inject.rs
+++ b/codex-rs/core/src/session/inject.rs
@@ -4,7 +4,6 @@ use super::turn_context::TurnContext;
 use crate::state::ActiveTurn;
 use crate::state::TurnState;
 use crate::tasks::RegularTask;
-use codex_protocol::config_types::ModeKind;
 use codex_protocol::models::ResponseItem;
 use std::sync::Arc;
 
@@ -41,9 +40,6 @@ impl Session {
         if input.is_empty() {
             return Ok(());
         }
-        if self.collaboration_mode().await.mode == ModeKind::Plan {
-            return Err(input);
-        }
         if self.input_queue.has_trigger_turn_mailbox_items().await {
             return Err(input);
         }