diff --git a/src/main.rs b/src/main.rs
index b33fc6f..10fb23a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -19,7 +19,7 @@ fn main() {
         .collect();
 
     let target = env::args().nth(1).map_or(LetterSet::FULL, LetterSet::from);
-    println!("letter count: {}", target.len());
+    eprintln!("letter count: {}", target.len());
     let Some((len, path)) = solve(&mut dictionary, target) else {
         println!("failed :(");
         process::exit(1);
@@ -33,11 +33,11 @@ fn solve(dictionary: &mut [(String, LetterSet)], target: LetterSet) -> Option<(u
     let mut bests = (0..=LetterSet::FULL.to_index())
         .map(|_| (u8::MAX, None))
         .collect::<Box<[_]>>();
-    println!("allocated!");
+    eprintln!("allocated!");
     bests[LetterSet::FULL.to_index()] = (0, None);
 
     dictionary.sort_by_key(|(word, ls)| word.len() - usize::from(ls.len()));
-    println!("sorted!");
+    eprintln!("sorted!");
 
     score(dictionary, &mut bests, target.negation(), 0);