diff --git a/src/config/index.ts b/src/config/index.ts
index 8e973e0..0e3bbef 100644
--- a/src/config/index.ts
+++ b/src/config/index.ts
@@ -16,7 +16,7 @@ export type DomainConfig = {
 
 export type ProcessorConfig = {
   contractAddress: string;
-  gateway: string;
+  gateway?: string;
   rpcURL: string;
   startBlock: number;
   numberOfConfirmations: number;
@@ -87,12 +87,13 @@ export type RpcUrlConfig = Array<{
 export function getProcessorConfig(): ProcessorConfig {
   const processorConfig: ProcessorConfig = {
     contractAddress: process.env.DOMAIN_BRIDGE_ADDRESS!,
-    gateway: process.env.DOMAIN_GATEWAY!,
+    gateway: process.env.DOMAIN_GATEWAY || "",
     rpcURL: process.env.RPC_URL!,
     numberOfConfirmations: Number(process.env.DOMAIN_CONFIRMATIONS),
     startBlock: Number(process.env.START_BLOCK!),
   };
-  validateConfig(processorConfig);
+  const { gateway, ...requiredConfig } = processorConfig;
+  validateConfig(requiredConfig);
   return processorConfig;
 }
 
diff --git a/src/evmProcessor.ts b/src/evmProcessor.ts
index 7e9679f..70175b4 100644
--- a/src/evmProcessor.ts
+++ b/src/evmProcessor.ts
@@ -103,8 +103,7 @@ export async function startEvmProcessing(
 }
 
 function getEvmProcessor(processorConfig: ProcessorConfig): EvmBatchProcessor {
-  return new EvmBatchProcessor()
-    .setGateway(processorConfig.gateway)
+  const evmProcessor = new EvmBatchProcessor()
     .setRpcEndpoint({
       url: processorConfig.rpcURL,
       rateLimit: 10,
@@ -131,6 +130,11 @@ function getEvmProcessor(processorConfig: ProcessorConfig): EvmBatchProcessor {
       topic0: [bridge.events.FailedHandlerExecution.topic],
       transaction: true,
     });
+
+  if (processorConfig.gateway && processorConfig.gateway.trim() !== "") {
+    evmProcessor.setGateway(processorConfig.gateway);
+  }
+  return evmProcessor;
 }
 
 export type Fields = EvmBatchProcessorFields<typeof processor>;