diff --git a/test/e2e/tests/app_test.go b/test/e2e/tests/app_test.go
index 489bbd099..b6f952733 100644
--- a/test/e2e/tests/app_test.go
+++ b/test/e2e/tests/app_test.go
@@ -5,6 +5,7 @@ import (
 	"context"
 	"fmt"
 	"math/rand"
+	"strconv"
 	"testing"
 	"time"
 
@@ -183,3 +184,18 @@ func TestApp_Tx(t *testing.T) {
 	}
 
 }
+
+func TestApp_VoteExtensions(t *testing.T) {
+	testNode(t, func(ctx context.Context, t *testing.T, node e2e.Node) {
+		client, err := node.Client()
+		require.NoError(t, err)
+
+		// This special value should have been created by way of vote extensions
+		resp, err := client.ABCIQuery(ctx, "", []byte("extensionSum"))
+		require.NoError(t, err)
+
+		extSum, err := strconv.Atoi(string(resp.Response.Value))
+		require.NoError(t, err)
+		require.GreaterOrEqual(t, extSum, 0)
+	})
+}