diff --git a/consensus/proto_array/src/proto_array_fork_choice.rs b/consensus/proto_array/src/proto_array_fork_choice.rs
index 5269957dff..f6427ba863 100644
--- a/consensus/proto_array/src/proto_array_fork_choice.rs
+++ b/consensus/proto_array/src/proto_array_fork_choice.rs
@@ -34,12 +34,12 @@ pub struct VoteTracker {
 }
 
 // Can be deleted once the V28 schema migration is buried.
+// Matches the on-disk format from schema v28: current_root, next_root, next_epoch.
 #[derive(Default, PartialEq, Clone, Encode, Decode)]
 pub struct VoteTrackerV28 {
     current_root: Hash256,
     next_root: Hash256,
-    current_slot: Slot,
-    next_slot: Slot,
+    next_epoch: Epoch,
 }
 
 // This impl is only used upon upgrade from pre-Gloas to Gloas with all pre-Gloas nodes.
@@ -49,9 +49,10 @@ impl From<VoteTrackerV28> for VoteTracker {
         VoteTracker {
             current_root: v.current_root,
             next_root: v.next_root,
-            current_slot: v.current_slot,
-            next_slot: v.next_slot,
-            // TODO(gloas): check that this is correct
+            // The v28 format stored next_epoch rather than slots. Default to 0 since the
+            // vote tracker will be updated on the next attestation.
+            current_slot: Slot::new(0),
+            next_slot: Slot::new(0),
             current_payload_present: false,
             next_payload_present: false,
         }
@@ -61,13 +62,14 @@ impl From<VoteTrackerV28> for VoteTracker {
 // This impl is only used upon downgrade from V29 to V28, with exclusively pre-Gloas nodes.
 impl From<VoteTracker> for VoteTrackerV28 {
     fn from(v: VoteTracker) -> Self {
-        // Drop the payload_present, but this is safe because this is only called on pre-Gloas
+        // Drop the payload_present fields. This is safe because this is only called on pre-Gloas
         // nodes.
         VoteTrackerV28 {
             current_root: v.current_root,
             next_root: v.next_root,
-            current_slot: v.current_slot,
-            next_slot: v.next_slot,
+            // The v28 format stored next_epoch. Default to 0 since the vote tracker will be
+            // updated on the next attestation.
+            next_epoch: Epoch::new(0),
         }
     }
 }