diff --git a/packages/core-contracts/contracts/actions/spark/Payback.sol b/packages/core-contracts/contracts/actions/spark/Payback.sol
index b59d884a66..42bb37b6da 100644
--- a/packages/core-contracts/contracts/actions/spark/Payback.sol
+++ b/packages/core-contracts/contracts/actions/spark/Payback.sol
@@ -29,11 +29,15 @@ contract SparkPayback is Executable, UseStore {
 
     payback.amount = store().readUint(bytes32(payback.amount), paramsMap[1], address(this));
 
+    if (payback.onBehalf == address(0)) {
+      payback.onBehalf = address(this);
+    }
+
     IPool(registry.getRegisteredService(SPARK_LENDING_POOL)).repay(
       payback.asset,
       payback.paybackAll ? type(uint256).max : payback.amount,
       2,
-      address(this)
+      payback.onBehalf
     );
 
     store().write(bytes32(payback.amount));
@@ -42,4 +46,4 @@ contract SparkPayback is Executable, UseStore {
   function parseInputs(bytes memory _callData) public pure returns (PaybackData memory params) {
     return abi.decode(_callData, (PaybackData));
   }
-}
+}
\ No newline at end of file
diff --git a/packages/core-contracts/contracts/core/types/Spark.sol b/packages/core-contracts/contracts/core/types/Spark.sol
index 05c93767d4..3081efda6a 100644
--- a/packages/core-contracts/contracts/core/types/Spark.sol
+++ b/packages/core-contracts/contracts/core/types/Spark.sol
@@ -24,6 +24,7 @@ struct PaybackData {
   address asset;
   uint256 amount;
   bool paybackAll;
+  address onBehalf;
 }
 
 /**
diff --git a/sdk/protocol-plugins/src/plugins/spark/actions/SparkPaybackAction.ts b/sdk/protocol-plugins/src/plugins/spark/actions/SparkPaybackAction.ts
index 910cd68569..e263e55bb0 100644
--- a/sdk/protocol-plugins/src/plugins/spark/actions/SparkPaybackAction.ts
+++ b/sdk/protocol-plugins/src/plugins/spark/actions/SparkPaybackAction.ts
@@ -1,11 +1,12 @@
 import { ActionCall, BaseAction, InputSlotsMapping } from '@summerfi/protocol-plugins-common'
+import { IAddress } from '@summerfi/sdk-common'
 import { ITokenAmount } from '@summerfi/sdk-common/common'
 
 export class SparkPaybackAction extends BaseAction<typeof SparkPaybackAction.Config> {
   public static readonly Config = {
     name: 'SparkPayback',
     version: 2,
-    parametersAbi: ['(address asset, uint256 amount, bool paybackAll)'],
+    parametersAbi: ['(address asset, uint256 amount, bool paybackAll, address onBehalf)'],
     storageInputs: ['asset', 'amountToPayback'],
     storageOutputs: ['paybackedAmount'],
   } as const
@@ -14,6 +15,7 @@ export class SparkPaybackAction extends BaseAction<typeof SparkPaybackAction.Con
     params: {
       paybackAmount: ITokenAmount
       paybackAll: boolean
+      onBehalf: IAddress
     },
     paramsMapping?: InputSlotsMapping,
   ): ActionCall {
@@ -23,6 +25,7 @@ export class SparkPaybackAction extends BaseAction<typeof SparkPaybackAction.Con
           asset: params.paybackAmount.token.address.value,
           amount: BigInt(params.paybackAmount.toBaseUnit()),
           paybackAll: params.paybackAll,
+          onBehalf: params.onBehalf.value,
         },
       ],
       mapping: paramsMapping,
diff --git a/sdk/protocol-plugins/src/plugins/spark/builders/SparkPaybackWithdrawActionBuilder.ts b/sdk/protocol-plugins/src/plugins/spark/builders/SparkPaybackWithdrawActionBuilder.ts
index 5ca0032a71..93db2b03d1 100644
--- a/sdk/protocol-plugins/src/plugins/spark/builders/SparkPaybackWithdrawActionBuilder.ts
+++ b/sdk/protocol-plugins/src/plugins/spark/builders/SparkPaybackWithdrawActionBuilder.ts
@@ -20,7 +20,7 @@ export class SparkPaybackWithdrawActionBuilder extends BaseActionBuilder<steps.P
   ]
 
   async build(params: ActionBuilderParams<steps.PaybackWithdrawStep>): Promise<void> {
-    const { context, step, addressBookManager, user } = params
+    const { context, step, addressBookManager, user, positionsManager } = params
 
     if (!isSparkLendingPool(step.inputs.position.pool)) {
       throw new Error('Invalid Spark lending pool')
@@ -57,6 +57,7 @@ export class SparkPaybackWithdrawActionBuilder extends BaseActionBuilder<steps.P
         paybackAll: getValueFromReference(step.inputs.paybackAmount)
           .toBN()
           .gt(step.inputs.position.debtAmount.toBN()),
+        onBehalf: positionsManager.address,
       },
       connectedInputs: {},
       connectedOutputs: {
diff --git a/sdk/protocol-plugins/tests/unit/actions/spark/SparkPaybackAction.spec.ts b/sdk/protocol-plugins/tests/unit/actions/spark/SparkPaybackAction.spec.ts
index 9b0d2c10c9..eeba17951f 100644
--- a/sdk/protocol-plugins/tests/unit/actions/spark/SparkPaybackAction.spec.ts
+++ b/sdk/protocol-plugins/tests/unit/actions/spark/SparkPaybackAction.spec.ts
@@ -30,6 +30,7 @@ describe('SparkPaybackAction Action', () => {
       {
         paybackAmount: tokenAmount,
         paybackAll: true,
+        onBehalf: onBehalf,
       },
       [2, 6, 7, 9],
     )
@@ -47,6 +48,7 @@ describe('SparkPaybackAction Action', () => {
         asset: tokenAmount.token.address.value,
         amount: BigInt(tokenAmount.toBaseUnit()),
         paybackAll: true,
+        onBehalf: onBehalf.value,
       },
     ])
     expect(actionDecodedArgs?.mapping).toEqual([2, 6, 7, 9])