diff --git a/contracts/L1GlobalForkRequester.sol b/contracts/L1GlobalForkRequester.sol
index ecfc69c0..ed1bf63c 100644
--- a/contracts/L1GlobalForkRequester.sol
+++ b/contracts/L1GlobalForkRequester.sol
@@ -60,12 +60,9 @@ contract L1GlobalForkRequester {
             token
         );
 
-        // If for some reason we've already got part of a payment, include it.
-        uint256 initialBalance = failedRequests[token][beneficiary][requestId]
-            .amount;
-
-        uint256 transferredBalance = initialBalance +
-            IForkonomicToken(token).balanceOf(moneyBox);
+        uint256 transferredBalance = IForkonomicToken(token).balanceOf(
+            moneyBox
+        );
 
         if (moneyBox.code.length == 0) {
             new MoneyBox{salt: salt}(token);
@@ -90,10 +87,6 @@ contract L1GlobalForkRequester {
             transferredBalance >= forkingManager.arbitrationFee() &&
             !forkingManager.isForkingInitiated()
         ) {
-            if (initialBalance > 0) {
-                delete (failedRequests[token][beneficiary][requestId]);
-            }
-
             IForkonomicToken(token).approve(
                 address(forkingManager),
                 transferredBalance
diff --git a/contracts/L2ForkArbitrator.sol b/contracts/L2ForkArbitrator.sol
index b24199d3..edc6f7a4 100644
--- a/contracts/L2ForkArbitrator.sol
+++ b/contracts/L2ForkArbitrator.sol
@@ -145,6 +145,10 @@ contract L2ForkArbitrator is IBridgeMessageReceiver {
             revert ForkInProgress(); // Forking over something else
         }
 
+        if (msg.sender != arbitrationRequests[question_id].payer) {
+            revert WrongSender();
+        }
+
         RequestStatus status = arbitrationRequests[question_id].status;
         if (
             status != RequestStatus.QUEUED &&
@@ -280,6 +284,10 @@ contract L2ForkArbitrator is IBridgeMessageReceiver {
             revert ForkInProgress();
         }
 
+        if (msg.sender != arbitrationRequests[question_id].payer) {
+            revert WrongSender();
+        }
+
         RequestStatus status = arbitrationRequests[question_id].status;
         if (status != RequestStatus.FORK_REQUEST_FAILED) {
             revert StatusNotForkRequestFailed();
diff --git a/test/AdjudicationIntegration.t.sol b/test/AdjudicationIntegration.t.sol
index 48737457..2d563db0 100644
--- a/test/AdjudicationIntegration.t.sol
+++ b/test/AdjudicationIntegration.t.sol
@@ -712,6 +712,13 @@ contract AdjudicationIntegrationTest is Test {
             "Not in forking state"
         );
 
+        vm.expectRevert(L2ForkArbitrator.WrongSender.selector);
+        l2ForkArbitrator.requestActivateFork(removalQuestionId);
+
+        vm.expectRevert(L2ForkArbitrator.WrongSender.selector);
+        l2ForkArbitrator.cancelArbitration(removalQuestionId);
+
+        vm.prank(user2);
         l2ForkArbitrator.cancelArbitration(removalQuestionId);
         assertEq(forkFee, l2ForkArbitrator.refundsDue(user2));