diff --git a/sdk/src/driftClient.ts b/sdk/src/driftClient.ts
index f663acfca4..92bdc144f7 100644
--- a/sdk/src/driftClient.ts
+++ b/sdk/src/driftClient.ts
@@ -6466,16 +6466,25 @@ export class DriftClient {
 		const isDelegateSigner = takerInfo.signingAuthority.equals(
 			takerInfo.takerUserAccount.delegate
 		);
-		const { signedMsgOrderParams } = this.decodeSignedMsgOrderParamsMessage(
-			signedSignedMsgOrderParams.orderParams,
-			isDelegateSigner
+
+		const borshBuf = Buffer.from(
+			signedSignedMsgOrderParams.orderParams.toString(),
+			'hex'
 		);
-		if (isUpdateHighLeverageMode(signedMsgOrderParams.bitFlags)) {
-			remainingAccounts.push({
-				pubkey: getHighLeverageModeConfigPublicKey(this.program.programId),
-				isWritable: true,
-				isSigner: false,
-			});
+		try {
+			const { signedMsgOrderParams } = this.decodeSignedMsgOrderParamsMessage(
+				borshBuf,
+				isDelegateSigner
+			);
+			if (isUpdateHighLeverageMode(signedMsgOrderParams.bitFlags)) {
+				remainingAccounts.push({
+					pubkey: getHighLeverageModeConfigPublicKey(this.program.programId),
+					isWritable: true,
+					isSigner: false,
+				});
+			}
+		} catch (err) {
+			console.error('invalid signed order encoding');
 		}
 
 		const messageLengthBuffer = Buffer.alloc(2);
diff --git a/tests/placeAndMakeSignedMsgBankrun.ts b/tests/placeAndMakeSignedMsgBankrun.ts
index 96ec30ac7b..4c8cb6d51f 100644
--- a/tests/placeAndMakeSignedMsgBankrun.ts
+++ b/tests/placeAndMakeSignedMsgBankrun.ts
@@ -46,6 +46,7 @@ import {
 	convertToNumber,
 	OrderParams,
 	SignedMsgOrderParamsDelegateMessage,
+	OrderParamsBitFlag,
 } from '../sdk/src';
 
 import {
@@ -1192,6 +1193,69 @@ describe('place and make signedMsg order', () => {
 		await takerDriftClient.unsubscribe();
 	});
 
+	it('should place with high-leverage mode update', async () => {
+		const slot = new BN(
+			await bankrunContextWrapper.connection.toConnection().getSlot()
+		);
+
+		const [takerDriftClient, takerDriftClientUser] =
+			await initializeNewTakerClientAndUser(
+				bankrunContextWrapper,
+				chProgram,
+				usdcMint,
+				usdcAmount,
+				marketIndexes,
+				spotMarketIndexes,
+				oracleInfos,
+				bulkAccountLoader
+			);
+		await takerDriftClientUser.fetchAccounts();
+
+		const marketIndex = 0;
+		const baseAssetAmount = BASE_PRECISION;
+		const takerOrderParams = getMarketOrderParams({
+			marketIndex,
+			direction: PositionDirection.LONG,
+			baseAssetAmount,
+			auctionStartPrice: new BN(223).mul(PRICE_PRECISION),
+			auctionEndPrice: new BN(227).mul(PRICE_PRECISION),
+			auctionDuration: 10,
+			userOrderId: 1,
+			postOnly: PostOnlyParams.NONE,
+			bitFlags: OrderParamsBitFlag.UpdateHighLeverageMode,
+		}) as OrderParams;
+		const signedMsgSlot = slot.subn(5);
+		const uuid = Uint8Array.from(Buffer.from(nanoid(8)));
+		const takerOrderParamsMessage: SignedMsgOrderParamsMessage = {
+			signedMsgOrderParams: takerOrderParams,
+			subAccountId: 0,
+			slot: signedMsgSlot,
+			uuid,
+			takeProfitOrderParams: null,
+			stopLossOrderParams: null,
+		};
+		const signedOrderParams = takerDriftClient.signSignedMsgOrderParamsMessage(
+			takerOrderParamsMessage
+		);
+
+		await makerDriftClient.initializeHighLeverageModeConfig(1);
+		await makerDriftClient.placeSignedMsgTakerOrder(
+			signedOrderParams,
+			marketIndex,
+			{
+				taker: await takerDriftClient.getUserAccountPublicKey(),
+				takerUserAccount: takerDriftClient.getUserAccount(),
+				takerStats: takerDriftClient.getUserStatsAccountPublicKey(),
+				signingAuthority: takerDriftClient.wallet.publicKey,
+			},
+			undefined,
+			2
+		);
+
+		await takerDriftClientUser.unsubscribe();
+		await takerDriftClient.unsubscribe();
+	});
+
 	it('should fail if auction params are not set', async () => {
 		slot = new BN(
 			await bankrunContextWrapper.connection.toConnection().getSlot()