diff --git a/lib/src/index.rs b/lib/src/index.rs
index 9f7fdb5cb..8a1708e5c 100644
--- a/lib/src/index.rs
+++ b/lib/src/index.rs
@@ -906,7 +906,7 @@ impl<'a> CompositeIndex<'a> {
         // ancestors are not heads.
         // Also find the smallest generation number among the candidates.
         let mut work = BinaryHeap::new();
-        let mut min_generation = std::u32::MAX;
+        let mut min_generation = u32::MAX;
         for pos in &candidate_positions {
             let entry = self.entry_by_pos(*pos);
             min_generation = min(min_generation, entry.generation_number());
diff --git a/lib/src/view.rs b/lib/src/view.rs
index c2875460c..c18fa2dee 100644
--- a/lib/src/view.rs
+++ b/lib/src/view.rs
@@ -123,7 +123,7 @@ fn heads_of_set(
 ) -> HashSet<CommitId> {
     let mut visited = HashSet::new();
     let mut work = vec![];
-    let mut oldest = std::u64::MAX;
+    let mut oldest = u64::MAX;
     let mut heads: HashSet<CommitId> = commit_ids.collect();
     for commit_id in &heads {
         let commit = store.get_commit(commit_id).unwrap();