diff --git a/crates/agent_ui/src/acp/thread_view.rs b/crates/agent_ui/src/acp/thread_view.rs
index 780cff2e78fd4441fc451ddb3bc93b66a940c6c8..93b6f749cd9891cd25cfc659a02d6808a9cc4ccb 100644
--- a/crates/agent_ui/src/acp/thread_view.rs
+++ b/crates/agent_ui/src/acp/thread_view.rs
@@ -4775,7 +4775,7 @@ impl AcpThreadView {
             buffer.update(cx, |buffer, cx| {
                 buffer.set_text(markdown, cx);
                 buffer.set_language(Some(markdown_language), cx);
-                buffer.set_capability(language::Capability::ReadOnly, cx);
+                buffer.set_capability(language::Capability::ReadWrite, cx);
             })?;
 
             workspace.update_in(cx, |workspace, window, cx| {