diff --git a/app/api/trading/test/route.ts b/app/api/trading/test/route.ts
index 7030d74..d84020d 100644
--- a/app/api/trading/test/route.ts
+++ b/app/api/trading/test/route.ts
@@ -276,7 +276,7 @@ export async function POST(request: NextRequest): Promise<NextResponse<TestTrade
         tp2Price,
         stopLossPrice,
         tp1SizePercent: config.takeProfit1SizePercent ?? 50,
-        tp2SizePercent: config.takeProfit2SizePercent ?? 100,  // Use ?? instead of || to allow 0
+  tp2SizePercent: config.takeProfit2SizePercent ?? 0,  // 0 = activate trailing stop for runner
         direction: direction,
         // Dual stop parameters
         useDualStops: config.useDualStops,
@@ -313,7 +313,7 @@ export async function POST(request: NextRequest): Promise<NextResponse<TestTrade
         takeProfit1Price: tp1Price,
         takeProfit2Price: tp2Price,
         tp1SizePercent: config.takeProfit1SizePercent ?? 50,
-        tp2SizePercent: config.takeProfit2SizePercent ?? 100,  // Use ?? instead of || to allow 0
+  tp2SizePercent: config.takeProfit2SizePercent ?? 0,  // 0 = activate trailing stop for runner
         configSnapshot: config,
         entryOrderTx: openResult.transactionSignature!,
         tp1OrderTx: exitOrderSignatures[0],