1 files changed, 2 insertions, 4 deletions
diff --git a/src/remake/proposal.rs b/src/remake/proposal.rs
index ede25d2..d9cd893 100644
--- a/src/remake/proposal.rs
+++ b/src/remake/proposal.rs
@@ -5,13 +5,13 @@
 
 use std::collections::HashSet;
 
-use automerge::ChangeHash;
 use tracing::info;
 
 use super::coordinator;
 use super::records::{self, Decision, Phase, Proposal, Record, Vote};
 use super::{Host, kind, vote};
 use crate::clock::UnixMillis;
+use crate::document::ChangeHash;
 use crate::document::store::StoreError;
 use crate::force::Force;
 
@@ -220,9 +220,7 @@ pub(super) async fn propose<H: Host>(
             if !base_at_commit {
                 let base = match base {
                     Some(base) => {
-                        if let Some(unknown) = base
-                            .iter()
-                            .find(|head| doc.get_change_by_hash(head).is_none())
+                        if let Some(unknown) = crate::document::changes::missing(doc, &base).first()
                         {
                             return Err(StartError::UnknownBase(unknown.to_string()));
                         }