diff --git a/src/pools/fixedRate/FixedRateExchange.ts b/src/pools/fixedRate/FixedRateExchange.ts
index 9d98c479..ca3e5bd9 100644
--- a/src/pools/fixedRate/FixedRateExchange.ts
+++ b/src/pools/fixedRate/FixedRateExchange.ts
@@ -803,7 +803,7 @@ export class FixedRateExchange {
 
     const estGas = await estimateGas(
       address,
-      this.fixedRateContract.methods.methods.toggleMintState,
+      this.fixedRateContract.methods.toggleMintState,
       exchangeId,
       false
     )