diff --git a/src/mappings/erc-721-pool.ts b/src/mappings/erc-721-pool.ts
index ab2ec73..c595f9b 100644
--- a/src/mappings/erc-721-pool.ts
+++ b/src/mappings/erc-721-pool.ts
@@ -405,6 +405,7 @@ export function handleMergeOrRemoveCollateralNFT(
     pool.bucketTokenIds = findAndRemoveTokenIds(tokenIdsToRemove, pool.bucketTokenIds)
   }
 
+  mergeOrRemove.pool = pool.id
   updateAccountPools(account, pool)
 
   // save entities to store
diff --git a/tests/erc-721-pool.test.ts b/tests/erc-721-pool.test.ts
index 786fcdf..fb9559e 100644
--- a/tests/erc-721-pool.test.ts
+++ b/tests/erc-721-pool.test.ts
@@ -1634,6 +1634,7 @@ describe("Describe entity assertions", () => {
   })
 
   // TODO: finish implementing once a mergeOrRemoveCollateralNFT calldata becomes available
+  // example mergeOrRemoveCollateral event.transaction.input: 0x47f6fe64000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000b7500000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000b750000000000000000000000000000000000000000000000000000000000000b740000000000000000000000000000000000000000000000000000000000000b730000000000000000000000000000000000000000000000000000000000000b72,
   test("MergeOrRemoveCollateralNFT", () => {
     // check entity is unavailable prior to storage
     assert.entityCount("MergeOrRemoveCollateralNFT", 0)