diff --git a/contracts/tokenization/StableDebtToken.sol b/contracts/tokenization/StableDebtToken.sol
index dfb73e0f..89430392 100644
--- a/contracts/tokenization/StableDebtToken.sol
+++ b/contracts/tokenization/StableDebtToken.sol
@@ -5,7 +5,6 @@ import {DebtTokenBase} from './base/DebtTokenBase.sol';
 import {MathUtils} from '../libraries/math/MathUtils.sol';
 import {WadRayMath} from '../libraries/math/WadRayMath.sol';
 import {IStableDebtToken} from './interfaces/IStableDebtToken.sol';
-import '@nomiclabs/buidler/console.sol';
 
 /**
  * @title contract StableDebtToken
@@ -107,8 +106,6 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
       _decreaseBorrowAllowance(onBehalfOf, user, amount);
     }
 
-    console.log('Invoked mint for %s and %s', user, onBehalfOf);
-
     //cumulates the user debt
     (, uint256 currentBalance, uint256 balanceIncrease) = _calculateBalanceIncrease(onBehalfOf);
 
diff --git a/test/helpers/actions.ts b/test/helpers/actions.ts
index 6d48e2b1..e44fc07f 100644
--- a/test/helpers/actions.ts
+++ b/test/helpers/actions.ts
@@ -302,7 +302,7 @@ export const delegateBorrowAllowance = async (
   const reserveData = await pool.getReserveData(reserveAddress);
 
   const debtToken =
-    interestRateMode === 'stable'
+    interestRateMode === '1'
       ? await getStableDebtToken(reserveData.stableDebtTokenAddress)
       : await getVariableDebtToken(reserveData.variableDebtTokenAddress);
 
@@ -310,15 +310,15 @@ export const delegateBorrowAllowance = async (
     .connect(user.signer)
     .approveDelegation(receiver, amountToDelegate);
 
-  if (expectedResult === 'revert') {
-    await expect(delegateAllowancePromise, revertMessage).to.be.reverted;
+  if (expectedResult === 'revert' && revertMessage) {
+    await expect(delegateAllowancePromise, revertMessage).to.be.revertedWith(revertMessage);
     return;
   } else {
     await delegateAllowancePromise;
     const allowance = await debtToken.borrowAllowance(user.address, receiver);
     expect(allowance.toString()).to.be.equal(
       amountToDelegate,
-      'borrowAllowance are set incorrectly'
+      'borrowAllowance is set incorrectly'
     );
   }
 };
diff --git a/test/helpers/scenarios/credit-delegation.json b/test/helpers/scenarios/credit-delegation.json
index a67924ee..a0aecf1b 100644
--- a/test/helpers/scenarios/credit-delegation.json
+++ b/test/helpers/scenarios/credit-delegation.json
@@ -68,7 +68,7 @@
             "borrowRateMode": "stable"
           },
           "expected": "revert",
-          "revertMessage": "54"
+          "revertMessage": "59"
         }
       ]
     },
@@ -96,7 +96,7 @@
             "borrowRateMode": "variable"
           },
           "expected": "revert",
-          "revertMessage": "54"
+          "revertMessage": "59"
         }
       ]
     },
@@ -126,23 +126,6 @@
           "expected": "success"
         }
       ]
-    },
-    {
-      "description": "User 0 delegates borrowing of 1 WETH to user 2 with wrong borrowRateMode, revert expected",
-      "actions": [
-        {
-          "name": "delegateBorrowAllowance",
-          "args": {
-            "reserve": "WETH",
-            "amount": "1",
-            "user": "0",
-            "borrowRateMode": "random",
-            "toUser": "2"
-          },
-          "expected": "revert",
-          "revertMessage": "8"
-        }
-      ]
     }
   ]
 }
diff --git a/test/scenario.spec.ts b/test/scenario.spec.ts
index 82631141..50793c0c 100644
--- a/test/scenario.spec.ts
+++ b/test/scenario.spec.ts
@@ -10,7 +10,7 @@ import {executeStory} from './helpers/scenario-engine';
 
 const scenarioFolder = './test/helpers/scenarios/';
 
-const selectedScenarios: string[] = [`credit-delegation.json`];
+const selectedScenarios: string[] = [];
 
 fs.readdirSync(scenarioFolder).forEach((file) => {
   if (selectedScenarios.length > 0 && !selectedScenarios.includes(file)) return;