From e1c266ab8153b3da60f15a0fc4d95e9b7fa617a5 Mon Sep 17 00:00:00 2001
From: Vasilis Xouris <vasileios.xouris@uniswap.org>
Date: Wed, 5 Feb 2025 14:02:19 -0800
Subject: [PATCH] check case of missing swapConfig

---
 src/routers/alpha-router/alpha-router.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/routers/alpha-router/alpha-router.ts b/src/routers/alpha-router/alpha-router.ts
index c9346c1a6..5bed0110a 100644
--- a/src/routers/alpha-router/alpha-router.ts
+++ b/src/routers/alpha-router/alpha-router.ts
@@ -1435,8 +1435,9 @@ export class AlphaRouter
     const availableProtocolsSet = new Set(Object.values(Protocol));
     const requestedProtocolsSet = new Set(protocols);
     if (
-      swapConfig?.type === SwapType.UNIVERSAL_ROUTER &&
-      swapConfig.version === UniversalRouterVersion.V1_2
+      !swapConfig ||
+      (swapConfig.type === SwapType.UNIVERSAL_ROUTER &&
+        swapConfig.version === UniversalRouterVersion.V1_2)
     ) {
       availableProtocolsSet.delete(Protocol.V4);
       if (requestedProtocolsSet.has(Protocol.V4)) {