diff --git a/contracts/interfaces/IPool.sol b/contracts/interfaces/IPool.sol
index 2226b1a4a..e6040a9a0 100644
--- a/contracts/interfaces/IPool.sol
+++ b/contracts/interfaces/IPool.sol
@@ -16,16 +16,14 @@ interface IPool {
    * @param user The address initiating the supply
    * @param onBehalfOf The beneficiary of the supply, receiving the aTokens
    * @param amount The amount supplied
-   * @param referral The referral code used
-   * @param useAsCollateral True if the user wants to use the supplied asset as collateral, false otherwise
+   * @param referralCode The referral code used
    **/
   event Supply(
     address indexed reserve,
     address user,
     address indexed onBehalfOf,
     uint256 amount,
-    uint16 indexed referral,
-    bool useAsCollateral
+    uint16 indexed referralCode
   );
 
   /**
@@ -175,14 +173,12 @@ interface IPool {
    *   is a different wallet
    * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
    *   0 if the action is executed directly by the user, without any middle-man
-   * @param useAsCollateral True if the user wants to use the supplied asset as collateral, false otherwise
    **/
   function supply(
     address asset,
     uint256 amount,
     address onBehalfOf,
-    uint16 referralCode,
-    bool useAsCollateral
+    uint16 referralCode
   ) external;
 
   /**
@@ -196,7 +192,6 @@ interface IPool {
    * @param deadline The deadline timestamp that the permit is valid
    * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
    *   0 if the action is executed directly by the user, without any middle-man
-   * @param useAsCollateral True if the user wants to use the supplied asset as collateral, false otherwise
    * @param permitV The V parameter of ERC712 permit sig
    * @param permitR The R parameter of ERC712 permit sig
    * @param permitS The S parameter of ERC712 permit sig
@@ -207,7 +202,6 @@ interface IPool {
     address onBehalfOf,
     uint16 referralCode,
     uint256 deadline,
-    bool useAsCollateral,
     uint8 permitV,
     bytes32 permitR,
     bytes32 permitS
diff --git a/contracts/protocol/libraries/logic/SupplyLogic.sol b/contracts/protocol/libraries/logic/SupplyLogic.sol
index 7ea8f0a13..57d0bd8da 100644
--- a/contracts/protocol/libraries/logic/SupplyLogic.sol
+++ b/contracts/protocol/libraries/logic/SupplyLogic.sol
@@ -38,14 +38,12 @@ library SupplyLogic {
     address user,
     address indexed onBehalfOf,
     uint256 amount,
-    uint16 indexed referral,
-    bool useAsCollateral
+    uint16 indexed referralCode
   );
 
   function executeSupply(
     mapping(address => DataTypes.ReserveData) storage reserves,
     DataTypes.UserConfigurationMap storage userConfig,
-    mapping(uint256 => address) storage reservesList,
     DataTypes.ExecuteSupplyParams memory params
   ) internal {
     DataTypes.ReserveData storage reserve = reserves[params.asset];
@@ -65,42 +63,12 @@ library SupplyLogic {
       reserveCache.nextLiquidityIndex
     );
 
-    // Apply `useAsCollateral` if:
-    // - user supplies assets on its own
-    // - user supplies assets on behalf of another user and it's their first supplied assets
-    if (params.onBehalfOf == msg.sender || (params.onBehalfOf != msg.sender && isFirstSupply)) {
-      if (params.useAsCollateral) {
-        userConfig.setUsingAsCollateral(reserve.id, true);
-        emit ReserveUsedAsCollateralEnabled(params.asset, params.onBehalfOf);
-      } else {
-        // Validate HF in case its needed
-        if (userConfig.isUsingAsCollateral(reserve.id)) {
-          userConfig.setUsingAsCollateral(reserve.id, false);
-          if (userConfig.isBorrowingAny()) {
-            ValidationLogic.validateHFAndLtv(
-              params.asset,
-              params.onBehalfOf,
-              reserves,
-              userConfig,
-              reservesList,
-              params.reservesCount,
-              params.oracle
-            );
-          }
-        }
-
-        emit ReserveUsedAsCollateralDisabled(params.asset, params.onBehalfOf);
-      }
+    if (isFirstSupply) {
+      userConfig.setUsingAsCollateral(reserve.id, true);
+      emit ReserveUsedAsCollateralEnabled(params.asset, params.onBehalfOf);
     }
 
-    emit Supply(
-      params.asset,
-      msg.sender,
-      params.onBehalfOf,
-      params.amount,
-      params.referralCode,
-      params.useAsCollateral
-    );
+    emit Supply(params.asset, msg.sender, params.onBehalfOf, params.amount, params.referralCode);
   }
 
   function executeWithdraw(
diff --git a/contracts/protocol/libraries/types/DataTypes.sol b/contracts/protocol/libraries/types/DataTypes.sol
index 96d73761f..8534dba8f 100644
--- a/contracts/protocol/libraries/types/DataTypes.sol
+++ b/contracts/protocol/libraries/types/DataTypes.sol
@@ -93,9 +93,6 @@ library DataTypes {
     uint256 amount;
     address onBehalfOf;
     uint16 referralCode;
-    bool useAsCollateral;
-    uint256 reservesCount;
-    address oracle;
   }
 
   struct ExecuteBorrowParams {
diff --git a/contracts/protocol/pool/Pool.sol b/contracts/protocol/pool/Pool.sol
index 13d5a7e00..c5defc3d4 100644
--- a/contracts/protocol/pool/Pool.sol
+++ b/contracts/protocol/pool/Pool.sol
@@ -84,21 +84,16 @@ contract Pool is VersionedInitializable, IPool, PoolStorage {
     address asset,
     uint256 amount,
     address onBehalfOf,
-    uint16 referralCode,
-    bool useAsCollateral
+    uint16 referralCode
   ) external override {
     SupplyLogic.executeSupply(
       _reserves,
       _usersConfig[onBehalfOf],
-      _reservesList,
       DataTypes.ExecuteSupplyParams(
         asset,
         amount,
         onBehalfOf,
-        referralCode,
-        useAsCollateral,
-        _reservesCount,
-        _addressesProvider.getPriceOracle()
+        referralCode
       )
     );
   }
@@ -110,7 +105,6 @@ contract Pool is VersionedInitializable, IPool, PoolStorage {
     address onBehalfOf,
     uint16 referralCode,
     uint256 deadline,
-    bool useAsCollateral,
     uint8 permitV,
     bytes32 permitR,
     bytes32 permitS
@@ -127,15 +121,11 @@ contract Pool is VersionedInitializable, IPool, PoolStorage {
     SupplyLogic.executeSupply(
       _reserves,
       _usersConfig[onBehalfOf],
-      _reservesList,
       DataTypes.ExecuteSupplyParams(
         asset,
         amount,
         onBehalfOf,
-        referralCode,
-        useAsCollateral,
-        _reservesCount,
-        _addressesProvider.getPriceOracle()
+        referralCode
       )
     );
   }
@@ -612,15 +602,11 @@ contract Pool is VersionedInitializable, IPool, PoolStorage {
     SupplyLogic.executeSupply(
       _reserves,
       _usersConfig[onBehalfOf],
-      _reservesList,
       DataTypes.ExecuteSupplyParams(
         asset,
         amount,
         onBehalfOf,
-        referralCode,
-        true,
-        _reservesCount,
-        _addressesProvider.getPriceOracle()
+        referralCode
       )
     );
   }
diff --git a/test-suites/helpers/actions.ts b/test-suites/helpers/actions.ts
index e9f060ae8..ebffec718 100644
--- a/test-suites/helpers/actions.ts
+++ b/test-suites/helpers/actions.ts
@@ -581,7 +581,6 @@ export const supplyWithPermit = async (
           onBehalfOf,
           '0',
           highDeadline,
-          useAsCollateral,
           v,
           r,
           s,
@@ -634,7 +633,6 @@ export const supplyWithPermit = async (
           onBehalfOf,
           '0',
           highDeadline,
-          useAsCollateral,
           v,
           r,
           s,