diff --git a/src/hooks/useSafe.test.ts b/src/hooks/useSafe.test.ts
index 3a94f9b..ce7da92 100644
--- a/src/hooks/useSafe.test.ts
+++ b/src/hooks/useSafe.test.ts
@@ -9,6 +9,7 @@ import * as useSignerAddress from '@/hooks/useSignerAddress.js'
 import * as useTransaction from '@/hooks/useTransaction.js'
 import * as usePendingTransactions from '@/hooks/usePendingTransactions.js'
 import * as useTransactions from '@/hooks/useTransactions.js'
+import { UseSafeTransactionReturnType } from '@/hooks/useSafeTransaction.js'
 import { useSafe } from '@/hooks/useSafe.js'
 import { configExistingSafe } from '@test/config.js'
 import {
@@ -250,7 +251,7 @@ describe('useSafe', () => {
       useTransactionSpy.mockReturnValue({
         data: safeMultisigTransaction,
         status: 'success'
-      })
+      } as UseSafeTransactionReturnType)
 
       const { result } = await renderUseSafeHook()
 
diff --git a/src/hooks/useTransaction.ts b/src/hooks/useTransaction.ts
index e463ae0..854ddf7 100644
--- a/src/hooks/useTransaction.ts
+++ b/src/hooks/useTransaction.ts
@@ -6,11 +6,15 @@ import {
 import type { ConfigParam, SafeConfig } from '@/types/index.js'
 import { useSafeTransaction, UseSafeTransactionReturnType } from './useSafeTransaction.js'
 
-export type UseTransactionParams = ConfigParam<SafeConfig> &
-  ({ safeTxHash: Hash; ethereumTxHash?: never } | { safeTxHash?: never; ethereumTxHash: Hash })
+export type UseTransactionParams =
+  | (ConfigParam<SafeConfig> & { safeTxHash: Hash })
+  | { ethereumTxHash: Hash }
 
-export type UseTransactionReturnType<Params extends UseTransactionParams> =
-  Params['safeTxHash'] extends Hash ? UseSafeTransactionReturnType : UseTransactionReturnTypeWagmi
+export type UseTransactionReturnType<Params extends UseTransactionParams> = Params extends {
+  safeTxHash: Hash
+}
+  ? UseSafeTransactionReturnType
+  : UseTransactionReturnTypeWagmi
 
 /**
  * Hook to get the status of a specific transaction.
@@ -23,9 +27,10 @@ export type UseTransactionReturnType<Params extends UseTransactionParams> =
 export function useTransaction<Params extends UseTransactionParams>(
   params: Params
 ): UseTransactionReturnType<Params> {
-  if (params.safeTxHash && isHash(params.safeTxHash)) {
+  if ('safeTxHash' in params && isHash(params.safeTxHash)) {
     return useSafeTransaction(params) as UseTransactionReturnType<Params>
   }
-
-  return useTransactionWagmi({ hash: params.ethereumTxHash }) as UseTransactionReturnType<Params>
+  return useTransactionWagmi({
+    hash: (params as { ethereumTxHash: Hash }).ethereumTxHash
+  }) as UseTransactionReturnType<Params>
 }