diff --git a/test/foundry-tests/reactors/RelayOrderReactorTest.t.sol b/test/foundry-tests/reactors/RelayOrderReactorTest.t.sol
index 0f69539..1115fa3 100644
--- a/test/foundry-tests/reactors/RelayOrderReactorTest.t.sol
+++ b/test/foundry-tests/reactors/RelayOrderReactorTest.t.sol
@@ -83,6 +83,22 @@ contract RelayOrderReactorTest is GasSnapshot, Test, PermitSignature, DeployPerm
         assertEq(tokenIn.balanceOf(address(filler)), 250000000000000000);
     }
 
+    function test_execute_noInputs() public {
+        Input[] memory inputs = new Input[](0);
+        OrderInfo memory orderInfo =
+            OrderInfoBuilder.init(address(reactor)).withSwapper(swapper).withDeadline(block.timestamp + 1000);
+        RelayOrder memory order = RelayOrderBuilder.init(orderInfo, inputs).withEndTime(block.timestamp + 1000);
+
+        SignedOrder memory signedOrder =
+            SignedOrder(abi.encode(order), signOrder(swapperPrivateKey, address(permit2), order));
+
+        vm.expectEmit(true, true, true, true, address(reactor));
+        emit Fill(order.hash(), address(filler), swapper, order.info.nonce);
+        // should be fillable
+        vm.prank(filler);
+        reactor.execute(signedOrder, filler);
+    }
+
     function test_multicall_execute_noDecay() public {
         tokenIn.mint(address(swapper), ONE * 100);
         // First order.
@@ -157,7 +173,6 @@ contract RelayOrderReactorTest is GasSnapshot, Test, PermitSignature, DeployPerm
         SignedOrder memory signedOrder =
             SignedOrder(abi.encode(order), signOrder(swapperPrivateKey, address(permit2), order));
 
-        vm.prank(filler);
         vm.expectRevert(ReactorErrors.InvalidReactor.selector);
         reactor.execute(signedOrder, filler);
     }
@@ -171,7 +186,21 @@ contract RelayOrderReactorTest is GasSnapshot, Test, PermitSignature, DeployPerm
             SignedOrder(abi.encode(order), signOrder(swapperPrivateKey, address(permit2), order));
 
         vm.warp(deadline + 1);
-        vm.prank(filler);
+        vm.expectRevert(abi.encodeWithSelector(SignatureExpired.selector, deadline));
+        reactor.execute(signedOrder, filler);
+    }
+
+    function test_execute_reverts_NoInputsSignatureExpired() public {
+        uint256 deadline = block.timestamp + 10;
+        Input[] memory inputs = new Input[](0);
+        RelayOrder memory order = RelayOrderBuilder.initDefault(tokenIn, address(reactor), swapper);
+        order.inputs = inputs;
+        order.info = order.info.withDeadline(deadline);
+
+        SignedOrder memory signedOrder =
+            SignedOrder(abi.encode(order), signOrder(swapperPrivateKey, address(permit2), order));
+
+        vm.warp(deadline + 1);
         vm.expectRevert(abi.encodeWithSelector(SignatureExpired.selector, deadline));
         reactor.execute(signedOrder, filler);
     }
@@ -212,7 +241,6 @@ contract RelayOrderReactorTest is GasSnapshot, Test, PermitSignature, DeployPerm
         SignedOrder memory signedOrder =
             SignedOrder(abi.encode(order), signOrder(swapperPrivateKey, address(permit2), order));
 
-        vm.prank(filler);
         vm.expectRevert(ReactorErrors.EndTimeBeforeStartTime.selector);
         reactor.execute(signedOrder, filler);
     }
@@ -224,7 +252,6 @@ contract RelayOrderReactorTest is GasSnapshot, Test, PermitSignature, DeployPerm
         SignedOrder memory signedOrder =
             SignedOrder(abi.encode(order), signOrder(swapperPrivateKey, address(permit2), order));
 
-        vm.prank(filler);
         vm.expectRevert(ReactorErrors.DeadlineBeforeEndTime.selector);
         reactor.execute(signedOrder, filler);
     }