diff --git a/crates/agent/src/thread.rs b/crates/agent/src/thread.rs
index 2700235be77e624ba2944215924da95c6bffd17e..f48e11d6c09da2a3ed3286b7f68b6b59f03fdb51 100644
--- a/crates/agent/src/thread.rs
+++ b/crates/agent/src/thread.rs
@@ -60,7 +60,7 @@ use uuid::Uuid;
 
 const TOOL_CANCELED_MESSAGE: &str = "Tool canceled by user";
 pub const MAX_TOOL_NAME_LENGTH: usize = 64;
-pub const MAX_SUBAGENT_DEPTH: u8 = 4;
+pub const MAX_SUBAGENT_DEPTH: u8 = 1;
 
 /// Context passed to a subagent thread for lifecycle management
 #[derive(Clone, Debug, Serialize, Deserialize)]