diff --git a/test/hardhat/pcsv3_test.ts b/test/hardhat/pcsv3_test.ts
index ad16b30..67f2e26 100644
--- a/test/hardhat/pcsv3_test.ts
+++ b/test/hardhat/pcsv3_test.ts
@@ -137,7 +137,8 @@ describe("Pool lens test with PCSV3 on BSC", () => {
 
   it("Test getting all positions by owner", async () => {
     const totalSupply = await npm.read.totalSupply({ blockNumber });
-    const owner = await npm.read.ownerOf([totalSupply - 1n], { blockNumber });
+    const tokenId = await npm.read.tokenByIndex([totalSupply - 1n], { blockNumber });
+    const owner = await npm.read.ownerOf([tokenId], { blockNumber });
     const posArr = await getAllPositionsByOwner(PCSV3_NPM, owner, publicClient, blockNumber);
     await verifyPositionDetails(posArr);
   });
diff --git a/test/hardhat/univ3_test.ts b/test/hardhat/univ3_test.ts
index 3690ff5..2d75346 100644
--- a/test/hardhat/univ3_test.ts
+++ b/test/hardhat/univ3_test.ts
@@ -135,7 +135,8 @@ describe("Pool lens test with UniV3 on mainnet", () => {
 
   it("Test getting all positions by owner", async () => {
     const totalSupply = await npm.read.totalSupply({ blockNumber });
-    const owner = await npm.read.ownerOf([totalSupply - 1n], { blockNumber });
+    const tokenId = await npm.read.tokenByIndex([totalSupply - 1n], { blockNumber });
+    const owner = await npm.read.ownerOf([tokenId], { blockNumber });
     const posArr = await getAllPositionsByOwner(UNIV3_NPM, owner, publicClient, blockNumber);
     await verifyPositionDetails(posArr);
   });