diff --git a/hooks/useEstimateGas.ts b/hooks/useEstimateGas.ts
index afa64841a..ce356984d 100644
--- a/hooks/useEstimateGas.ts
+++ b/hooks/useEstimateGas.ts
@@ -13,20 +13,28 @@ export default function useEstimateGas() {
     async (request?: EstimateContractGasParameters) => {
       if (!publicClient) return;
 
+      const DEFAULT_L1_GAS = 555_555_555_555n;
+
       let l1Gas = 0n;
       if (chain.id === optimism.id) {
         if (request) {
           const data = encodeFunctionData(request);
-          l1Gas = await publicClient.readContract({
-            abi: l1GasPriceOracleABI,
-            address: '0x420000000000000000000000000000000000000F',
-            functionName: 'getL1Fee',
-            args: [data],
-          });
+
+          try {
+            l1Gas = await publicClient.readContract({
+              abi: l1GasPriceOracleABI,
+              address: '0x420000000000000000000000000000000000000F',
+              functionName: 'getL1Fee',
+              args: [data],
+            });
+          } catch (l1FeeError) {
+            l1Gas = DEFAULT_L1_GAS;
+          }
         } else {
-          l1Gas = 555_555_555_555n;
+          l1Gas = DEFAULT_L1_GAS;
         }
       }
+
       const gasPrice = await publicClient.getGasPrice();
       const gasUsed = request ? await publicClient.estimateContractGas(request) : 500_000n;