diff --git a/crates/agent/src/agent.rs b/crates/agent/src/agent.rs
index f20c7a8f1d5c780ffd3214c8736e7c921f32d134..0bb0f2c8790a5e07b97976ba391105554ad03307 100644
--- a/crates/agent/src/agent.rs
+++ b/crates/agent/src/agent.rs
@@ -1749,7 +1749,7 @@ impl SubagentHandle for NativeSubagentHandle {
     }
 
     fn num_entries(&self, cx: &App) -> usize {
-        self.subagent_thread.read(cx).num_messages()
+        self.acp_thread.read(cx).entries().len()
     }
 
     fn send(&self, message: String, cx: &AsyncApp) -> Task<Result<String>> {
diff --git a/crates/agent/src/thread.rs b/crates/agent/src/thread.rs
index 2a9e8d3270cc6ae6b95e28dbb2c06370980bf028..4c43a66fe5bb67c11fe5f0438d54cc86a498c55c 100644
--- a/crates/agent/src/thread.rs
+++ b/crates/agent/src/thread.rs
@@ -1389,10 +1389,6 @@ impl Thread {
         self.messages.last()
     }
 
-    pub fn num_messages(&self) -> usize {
-        self.messages.len()
-    }
-
     #[cfg(any(test, feature = "test-support"))]
     pub fn last_received_or_pending_message(&self) -> Option<Message> {
         if let Some(message) = self.pending_message.clone() {