diff --git a/internal/consensus/types/height_vote_set_test.go b/internal/consensus/types/height_vote_set_test.go
index 671c5f214..8bafc7a90 100644
--- a/internal/consensus/types/height_vote_set_test.go
+++ b/internal/consensus/types/height_vote_set_test.go
@@ -88,6 +88,7 @@ func makeVoteHR(
 	require.NoError(t, err, "Error signing vote")
 
 	vote.Signature = v.Signature
+	vote.ExtensionSignature = v.ExtensionSignature
 
 	return vote
 }
diff --git a/internal/test/factory/commit.go b/internal/test/factory/commit.go
index 1a8691855..bc4022499 100644
--- a/internal/test/factory/commit.go
+++ b/internal/test/factory/commit.go
@@ -31,6 +31,7 @@ func MakeCommit(ctx context.Context, blockID types.BlockID, height int64, round
 			return nil, err
 		}
 		vote.Signature = v.Signature
+		vote.ExtensionSignature = v.ExtensionSignature
 		if _, err := voteSet.AddVote(vote); err != nil {
 			return nil, err
 		}