diff --git a/tests/buildTransaction.test.ts b/tests/buildTransaction.test.ts
index 7d2a145c..09e4a79c 100644
--- a/tests/buildTransaction.test.ts
+++ b/tests/buildTransaction.test.ts
@@ -1365,7 +1365,8 @@ test.describe("Build Transaction Page", () => {
           isSorobanOp: true,
           label: "Contract ID",
           value: "aaa",
-          errorMessage: "The string must start with 'C'.",
+          errorMessage:
+            "Invalid contract ID. Please enter a valid contract ID.",
         });
 
         await testInputError({
@@ -1374,7 +1375,7 @@ test.describe("Build Transaction Page", () => {
           label: "Contract ID",
           value: "CAQP53Z2GMZ6WVOKJWXMCVDL",
           errorMessage:
-            "The string length should be at least 52 characters long.",
+            "Invalid contract ID. Please enter a valid contract ID.",
         });
 
         await testInputError({
diff --git a/tests/mock/smartContracts.ts b/tests/mock/smartContracts.ts
index ab52de75..28dff5ea 100644
--- a/tests/mock/smartContracts.ts
+++ b/tests/mock/smartContracts.ts
@@ -1,7 +1,7 @@
 import { SAVED_ACCOUNT_1 } from "./localStorage";
 
 export const MOCK_CONTRACT_ID =
-  "C000NO6F7FRDHSOFQBT2L2UWYIZ2PU76JKVRYAQTG3KZSQLYAOKIF2WB";
+  "CAQP53Z2GMZ6WVOKJWXMCVDLZYJ7GYVMWPAMWACPLEZRF2UEZW3B636S";
 export const MOCK_CONTRACT_INFO_RESPONSE_SUCCESS = {
   contract: MOCK_CONTRACT_ID,
   account: MOCK_CONTRACT_ID,
diff --git a/tests/smartContractsContractInfo.test.ts b/tests/smartContractsContractInfo.test.ts
index 67d79fea..3aaa3a33 100644
--- a/tests/smartContractsContractInfo.test.ts
+++ b/tests/smartContractsContractInfo.test.ts
@@ -37,13 +37,13 @@ test.describe("Smart Contracts: Contract Info", () => {
     // Input validation
     await contractIdInput.fill("aaa");
     await expect(
-      page.getByText("The string must start with 'C'."),
+      page.getByText("Invalid contract ID. Please enter a valid contract ID."),
     ).toBeVisible();
 
     // Valid input
     await contractIdInput.fill(MOCK_CONTRACT_ID);
     await expect(
-      page.getByText("The string must start with 'C'."),
+      page.getByText("Invalid contract ID. Please enter a valid contract ID."),
     ).toBeHidden();
 
     // Fetch info
diff --git a/tests/submitTransactionPage.test.ts b/tests/submitTransactionPage.test.ts
index 2405a082..9defb141 100644
--- a/tests/submitTransactionPage.test.ts
+++ b/tests/submitTransactionPage.test.ts
@@ -416,24 +416,25 @@ test.describe("Submit Transaction Page", () => {
       // Omitting the API end result because the test gives inconsistenet results
     });
   });
-});
 
-test.describe("Update default submit method to RPC when it is a Soroban XDR", () => {
-  test("Submit Soroban", async ({ page }) => {
-    const xdrInput = page.getByLabel(
-      "Input a base-64 encoded TransactionEnvelope",
-    );
-    const submitMethodsBtn = page
-      .locator(".SubmitTx__buttons")
-      .getByRole("button", { name: /via/i });
+  test.describe("Update default submit method to RPC when it is a Soroban XDR", () => {
+    test("Submit Soroban", async ({ page }) => {
+      const xdrInput = page.getByLabel(
+        "Input a base-64 encoded TransactionEnvelope",
+      );
+
+      // Input the Soroban XDR
+      await xdrInput.fill(MOCK_VALID_SOROBAN_TX_XDR.XDR);
 
-    await expect(submitMethodsBtn).toBeVisible();
+      const submitMethodsBtn = page
+        .locator(".SubmitTx__buttons")
+        .getByRole("button", { name: /via/i });
 
-    // Input the Soroban XDR
-    await xdrInput.fill(MOCK_VALID_SOROBAN_TX_XDR.XDR);
+      await expect(submitMethodsBtn).toBeVisible();
 
-    // Check if the submit method button shows RPC as default
-    await expect(submitMethodsBtn).toHaveText("via RPC");
+      // Check if the submit method button shows RPC as default
+      await expect(submitMethodsBtn).toHaveText("via RPC");
+    });
   });
 });