diff --git a/lib/drift/orders.ts b/lib/drift/orders.ts
index 18cfc51..702f25a 100644
--- a/lib/drift/orders.ts
+++ b/lib/drift/orders.ts
@@ -468,7 +468,15 @@ export async function closePosition(
     }
     
     // Calculate size to close
-    const sizeToClose = position.size * (params.percentToClose / 100)
+    let sizeToClose = position.size * (params.percentToClose / 100)
+    
+    // CRITICAL FIX: If calculated size is below minimum, close 100% instead
+    // This prevents "runner" positions from being too small to close
+    if (sizeToClose < marketConfig.minOrderSize) {
+      console.log(`⚠️ Calculated close size ${sizeToClose.toFixed(4)} is below minimum ${marketConfig.minOrderSize}`)
+      console.log(`   Forcing 100% close to avoid Drift rejection`)
+      sizeToClose = position.size // Close entire position
+    }
     
     console.log(`📝 Close order details:`)
     console.log(`   Current position: ${position.size.toFixed(4)} ${position.side}`)