diff --git a/app/Http/Controllers/Api/AgentProductController.php b/app/Http/Controllers/Api/AgentProductController.php
index c43ad15..e7fcdd0 100644
--- a/app/Http/Controllers/Api/AgentProductController.php
+++ b/app/Http/Controllers/Api/AgentProductController.php
@@ -64,7 +64,13 @@ class AgentProductController extends Controller
 		} else {
 			$where = ['id' => $id, 'agent_id' => $this->agent_id, 'status' => ProductStatus::ON_SALE];
 		}
-		$agent_product = AgentProduct::with(['coupon:tag,agent_product_id', 'product:id,type,extends', 'spec.productSpec:id,name,date'])
+		$agent_product = AgentProduct::with([
+				'coupon:tag,agent_product_id',
+				'product:id,type,extends',
+				'spec' => function($query) {
+					return $query->has('productSpec')->with('productSpec:id,name,date');
+				}
+			])
 			->whereDoesntHave('agentProductItem', function ($query) {
 				return $query->whereHas('product', function ($query) {
 					return $query->where('stock', '<=', 0)->orWhere('status', '<>', ProductStatus::ON_SALE);