diff --git a/test/concrete/flowErc1155/Erc1155FlowTest.sol b/test/concrete/flowErc1155/Erc1155FlowTest.sol
index e6f7d837..ffd0c643 100644
--- a/test/concrete/flowErc1155/Erc1155FlowTest.sol
+++ b/test/concrete/flowErc1155/Erc1155FlowTest.sol
@@ -28,6 +28,9 @@ import {LibContextWrapper} from "test/lib/LibContextWrapper.sol";
 import {LibEncodedDispatch} from "rain.interpreter.interface/lib/caller/LibEncodedDispatch.sol";
 import {LibUint256Array} from "rain.solmem/lib/LibUint256Array.sol";
 import {LibUint256Matrix} from "rain.solmem/lib/LibUint256Matrix.sol";
+import {FLOW_ENTRYPOINT, FLOW_MAX_OUTPUTS} from "src/abstract/FlowCommon.sol";
+import {LibEncodedDispatch} from "rain.interpreter.interface/lib/caller/LibEncodedDispatch.sol";
+import {LibContextWrapper} from "test/lib/LibContextWrapper.sol";
 
 contract Erc1155FlowTest is FlowERC1155Test {
     using LibEvaluable for EvaluableV2;
@@ -515,4 +518,28 @@ contract Erc1155FlowTest is FlowERC1155Test {
         flowInvalid.flow(evaluablesInvalid[0], new uint256[](0), new SignedContextV1[](0));
         vm.stopPrank();
     }
+
+    /**
+     * @notice Tests that the flow halts if it does not meet the 'ensure' requirement.
+     */
+    /// forge-config: default.fuzz.runs = 100
+    function testFlowErc1155HaltIfEnsureRequirementNotMet(string memory uri) external {
+        (IFlowERC1155V5 flow, EvaluableV2 memory evaluable) = deployIFlowERC1155V5(uri);
+
+        assumeEtchable(address(0), address(flow));
+
+        (uint256[] memory stack,) = mintAndBurnFlowStack(address(this), 20 ether, 10 ether, 5, transferEmpty());
+        interpreterEval2MockCall(stack, new uint256[](0));
+
+        uint256[][] memory context = LibContextWrapper.buildAndSetContext(
+            new uint256[](0), new SignedContextV1[](0), address(this), address(flow)
+        );
+
+        interpreterEval2RevertCall(
+            address(flow), LibEncodedDispatch.encode2(evaluable.expression, FLOW_ENTRYPOINT, FLOW_MAX_OUTPUTS), context
+        );
+
+        vm.expectRevert("REVERT_EVAL2_CALL");
+        flow.flow(evaluable, new uint256[](0), new SignedContextV1[](0));
+    }
 }