diff --git a/pageserver/src/tenant.rs b/pageserver/src/tenant.rs
index 640a18c13c..cd40a9f770 100644
--- a/pageserver/src/tenant.rs
+++ b/pageserver/src/tenant.rs
@@ -4301,9 +4301,11 @@ mod tests {
 
         let _ = timeline.make_lsn_lease(Lsn(0x30), &ctx)?;
 
-        let gc_info = timeline.gc_info.read().unwrap();
-        assert!(gc_info.leases.contains_key(&Lsn(0x30)));
-        info!("GcCutOff: {:?}", gc_info.cutoffs);
+        {
+            let gc_info = timeline.gc_info.read().unwrap();
+            assert!(gc_info.leases.contains_key(&Lsn(0x30)));
+            info!("GcCutOff: {:?}", gc_info.cutoffs);
+        }
         let res = tenant
             .gc_iteration(
                 Some(TIMELINE_ID),
diff --git a/pageserver/src/tenant/timeline.rs b/pageserver/src/tenant/timeline.rs
index 662ceceaa5..54ec7d47ba 100644
--- a/pageserver/src/tenant/timeline.rs
+++ b/pageserver/src/tenant/timeline.rs
@@ -4917,7 +4917,7 @@ impl Timeline {
             // Gets the minimum LSN that holds the valid lease.
             // Caveat: This value could be stale since we rely on refresh_gc_info to invalidate leases,
             // so there could be leases invalidated between the refresh and here.
-            let min_lsn_with_valid_lease = gc_info.leases.last_key_value().map(|(lsn, _)| *lsn);
+            let min_lsn_with_valid_lease = gc_info.leases.first_key_value().map(|(lsn, _)| *lsn);
             (
                 horizon_cutoff,
                 pitr_cutoff,