diff --git a/contracts/bots/PartialLiquidationBotV3.sol b/contracts/bots/PartialLiquidationBotV3.sol
index e8411d1..d632b1d 100644
--- a/contracts/bots/PartialLiquidationBotV3.sol
+++ b/contracts/bots/PartialLiquidationBotV3.sol
@@ -26,8 +26,8 @@ import {IPriceOracleV3, PriceUpdate} from "@gearbox-protocol/core-v3/contracts/i
 import {IBot} from "@gearbox-protocol/core-v3/contracts/interfaces/base/IBot.sol";
 import {IVersion} from "@gearbox-protocol/core-v3/contracts/interfaces/base/IVersion.sol";
 import {PERCENTAGE_FACTOR} from "@gearbox-protocol/core-v3/contracts/libraries/Constants.sol";
-import {ContractsRegisterTrait} from "@gearbox-protocol/core-v3/contracts/traits/ContractsRegisterTrait.sol";
 import {ReentrancyGuardTrait} from "@gearbox-protocol/core-v3/contracts/traits/ReentrancyGuardTrait.sol";
+import {SanityCheckTrait} from "@gearbox-protocol/core-v3/contracts/traits/SanityCheckTrait.sol";
 
 import {IPartialLiquidationBotV3} from "../interfaces/IPartialLiquidationBotV3.sol";
 
@@ -48,7 +48,7 @@ import {IPartialLiquidationBotV3} from "../interfaces/IPartialLiquidationBotV3.s
 ///         - this implementation can't handle fee-on-transfer underlyings.
 ///         The bot can also be used for deleverage to prevent liquidations by triggering earlier, limiting
 ///         operation size and/or charging less in premium and fees.
-contract PartialLiquidationBotV3 is IPartialLiquidationBotV3, ContractsRegisterTrait, ReentrancyGuardTrait {
+contract PartialLiquidationBotV3 is IPartialLiquidationBotV3, ReentrancyGuardTrait, SanityCheckTrait {
     using SafeERC20 for IERC20;
 
     /// @dev Internal liquidation variables
@@ -86,20 +86,19 @@ contract PartialLiquidationBotV3 is IPartialLiquidationBotV3, ContractsRegisterT
     uint16 public immutable override feeScaleFactor;
 
     /// @notice Constructor
-    /// @param contractsRegister_ Contracts register address
     /// @param treasury_ Treasury address
     /// @param minHealthFactor_ Minimum health factor to trigger the liquidation
     /// @param maxHealthFactor_ Maximum health factor to allow after the liquidation
     /// @param premiumScaleFactor_ Factor to scale credit manager's liquidation premium by
     /// @param feeScaleFactor_ Factor to scale credit manager's liquidation fee by
+    /// @dev Reverts if `treasury_` is zero address
     constructor(
-        address contractsRegister_,
         address treasury_,
         uint16 minHealthFactor_,
         uint16 maxHealthFactor_,
         uint16 premiumScaleFactor_,
         uint16 feeScaleFactor_
-    ) ContractsRegisterTrait(contractsRegister_) {
+    ) nonZeroAddress(treasury_) {
         treasury = treasury_;
         if (maxHealthFactor_ < PERCENTAGE_FACTOR || maxHealthFactor_ < minHealthFactor_) {
             revert IncorrectParameterException();
@@ -172,9 +171,8 @@ contract PartialLiquidationBotV3 is IPartialLiquidationBotV3, ContractsRegisterT
         vars.feeLiquidation = feeLiquidation * feeScaleFactor / PERCENTAGE_FACTOR;
     }
 
-    /// @dev Ensures that `creditAccount` is liquidatable, its credit manager is registered and `token` is not underlying
+    /// @dev Ensures that `creditAccount` is liquidatable and `token` is not underlying
     function _validateLiquidation(LiquidationVars memory vars, address creditAccount, address token) internal view {
-        _ensureRegisteredCreditManager(vars.creditManager);
         if (token == vars.underlying) revert UnderlyingNotLiquidatableException();
         if (!_isLiquidatable(_calcDebtAndCollateral(vars.creditManager, creditAccount), minHealthFactor)) {
             revert CreditAccountNotLiquidatableException();
diff --git a/contracts/interfaces/IPartialLiquidationBotV3.sol b/contracts/interfaces/IPartialLiquidationBotV3.sol
index 42a174b..455aba2 100644
--- a/contracts/interfaces/IPartialLiquidationBotV3.sol
+++ b/contracts/interfaces/IPartialLiquidationBotV3.sol
@@ -77,7 +77,6 @@ interface IPartialLiquidationBotV3 is IBot {
     /// @param priceUpdates On-demand price feed updates to apply before calculations
     /// @return seizedAmount Amount of `token` seized
     /// @dev Requires underlying token approval from caller to this contract
-    /// @dev Reverts if `creditAccount`'s credit manager is not registered
     /// @dev Reverts if `token` is underlying
     /// @dev Reverts if `creditAccount`'s health factor is not less than `minHealthFactor` before liquidation
     /// @dev Reverts if amount of `token` to be seized is less than `minSeizedAmount`
@@ -100,7 +99,6 @@ interface IPartialLiquidationBotV3 is IBot {
     /// @param priceUpdates On-demand price feed updates to apply before calculations
     /// @return repaidAmount Amount of underlying repaid
     /// @dev Requires underlying token approval from caller to this contract
-    /// @dev Reverts if `creditAccount`'s credit manager is not registered
     /// @dev Reverts if `token` is underlying
     /// @dev Reverts if `creditAccount`'s health factor is not less than `minHealthFactor` before liquidation
     /// @dev Reverts if amount of underlying to be repaid is greater than `maxRepaidAmount`
diff --git a/contracts/test/integration/PartialLiquidationBotV3.int.t.sol b/contracts/test/integration/PartialLiquidationBotV3.int.t.sol
index 0be113e..60b06cd 100644
--- a/contracts/test/integration/PartialLiquidationBotV3.int.t.sol
+++ b/contracts/test/integration/PartialLiquidationBotV3.int.t.sol
@@ -87,12 +87,7 @@ contract PartialLiquidationBotV3IntegrationTest is IntegrationTestHelper {
         treasury = makeAddr("TREASURY");
 
         bot = new PartialLiquidationBotV3(
-            address(cr),
-            treasury,
-            params.minHealthFactor,
-            params.maxHealthFactor,
-            params.premiumScaleFactor,
-            params.feeScaleFactor
+            treasury, params.minHealthFactor, params.maxHealthFactor, params.premiumScaleFactor, params.feeScaleFactor
         );
 
         dai = tokenTestSuite.addressOf(Tokens.DAI);