diff --git a/package.json b/package.json
index 91f5eae9bd..ca9ce5bb51 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "safe-react",
-  "version": "3.14.4",
+  "version": "3.14.5",
   "description": "Allowing crypto users manage funds in a safer way",
   "website": "https://github.com/gnosis/safe-react#readme",
   "bugs": {
diff --git a/src/logic/safe/store/actions/createTransaction.ts b/src/logic/safe/store/actions/createTransaction.ts
index c98569edaa..bde59c8f26 100644
--- a/src/logic/safe/store/actions/createTransaction.ts
+++ b/src/logic/safe/store/actions/createTransaction.ts
@@ -34,6 +34,8 @@ import { checkIfOffChainSignatureIsPossible, getPreValidatedSignatures } from 's
 import { TxParameters } from 'src/routes/safe/container/hooks/useTransactionParameters'
 import { isTxPendingError } from 'src/logic/wallets/getWeb3'
 import { Errors, logError } from 'src/logic/exceptions/CodedException'
+import { getNetworkId } from 'src/config'
+import { ETHEREUM_NETWORK } from 'src/config/networks/network.d'
 
 export interface CreateTransactionArgs {
   navigateToTransactionsTab?: boolean
@@ -148,11 +150,12 @@ export const createTransaction =
       }
 
       const tx = isExecution ? getExecutionTransaction(txArgs) : getApprovalTransaction(safeInstance, safeTxHash)
+      const gasParam = getNetworkId() === ETHEREUM_NETWORK.MAINNET ? 'maxFeePerGas' : 'gasPrice'
       const sendParams: PayableTx = {
         from,
         value: 0,
         gas: ethParameters?.ethGasLimit,
-        maxFeePerGas: ethParameters?.ethGasPriceInGWei,
+        [gasParam]: ethParameters?.ethGasPriceInGWei,
         nonce: ethParameters?.ethNonce,
       }
 
diff --git a/src/logic/safe/store/actions/processTransaction.ts b/src/logic/safe/store/actions/processTransaction.ts
index 6750d62a51..7088e3e287 100644
--- a/src/logic/safe/store/actions/processTransaction.ts
+++ b/src/logic/safe/store/actions/processTransaction.ts
@@ -32,6 +32,8 @@ import { Confirmation } from 'src/logic/safe/store/models/types/confirmation'
 import { Operation, TransactionStatus } from '@gnosis.pm/safe-react-gateway-sdk'
 import { isTxPendingError } from 'src/logic/wallets/getWeb3'
 import { Errors, logError } from 'src/logic/exceptions/CodedException'
+import { getNetworkId } from 'src/config'
+import { ETHEREUM_NETWORK } from 'src/config/networks/network.d'
 
 interface ProcessTransactionArgs {
   approveAndExecute: boolean
@@ -134,11 +136,12 @@ export const processTransaction =
 
       transaction = isExecution ? getExecutionTransaction(txArgs) : getApprovalTransaction(safeInstance, tx.safeTxHash)
 
+      const gasParam = getNetworkId() === ETHEREUM_NETWORK.MAINNET ? 'maxFeePerGas' : 'gasPrice'
       const sendParams: PayableTx = {
         from,
         value: 0,
         gas: ethParameters?.ethGasLimit,
-        maxFeePerGas: ethParameters?.ethGasPriceInGWei,
+        [gasParam]: ethParameters?.ethGasPriceInGWei,
         nonce: ethParameters?.ethNonce,
       }