diff --git a/bitcoin/src/psbt/serialize.rs b/bitcoin/src/psbt/serialize.rs
index e9492953a..25eef99c6 100644
--- a/bitcoin/src/psbt/serialize.rs
+++ b/bitcoin/src/psbt/serialize.rs
@@ -370,7 +370,7 @@ impl Serialize for TapTree {
             // safe to cast from usize to u8
             buf.push(leaf_info.merkle_branch().len() as u8);
             buf.push(leaf_info.version().to_consensus());
-            leaf_info.script().consensus_encode(&mut buf).expect("Vecs dont err");
+            leaf_info.script().consensus_encode(&mut buf).expect("Vecs don't err");
         }
         buf
     }