diff --git a/compiler/mono/src/decision_tree.rs b/compiler/mono/src/decision_tree.rs
index 2f2997e012..9dbf895e7f 100644
--- a/compiler/mono/src/decision_tree.rs
+++ b/compiler/mono/src/decision_tree.rs
@@ -1421,6 +1421,7 @@ fn decide_to_branching<'a>(
         } => {
             // generate a (nested) if-then-else
 
+            // TODO specialize layout in the true and false case?
             let pass_expr = decide_to_branching(
                 env,
                 procs,
diff --git a/examples/effect/thing/platform-dir/src/lib.rs b/examples/effect/thing/platform-dir/src/lib.rs
index 3c3f90a089..bfb040f793 100644
--- a/examples/effect/thing/platform-dir/src/lib.rs
+++ b/examples/effect/thing/platform-dir/src/lib.rs
@@ -80,7 +80,7 @@ unsafe fn call_the_closure(function_pointer: *const u8, closure_data_ptr: *const
 
 #[no_mangle]
 pub fn rust_main() -> isize {
-    println!("Running Roc closure");
+    eprintln!("Running Roc closure");
     let start_time = SystemTime::now();
 
     let size = unsafe { roc_main_size() } as usize;
@@ -121,7 +121,7 @@ pub fn rust_main() -> isize {
     let end_time = SystemTime::now();
     let duration = end_time.duration_since(start_time).unwrap();
 
-    println!(
+    eprintln!(
         "Roc closure took {:.4} ms to compute this answer: {:?}",
         duration.as_secs_f64() * 1000.0,
         // truncate the answer, so stdout is not swamped