diff --git a/.version b/.version
index 2470470..bd614ad 100644
--- a/.version
+++ b/.version
@@ -1 +1 @@
-1.0.4.5
\ No newline at end of file
+1.0.5.6
\ No newline at end of file
diff --git a/Netina.Api/Netina.Api.csproj b/Netina.Api/Netina.Api.csproj
index c2a9cbe..69aacfa 100644
--- a/Netina.Api/Netina.Api.csproj
+++ b/Netina.Api/Netina.Api.csproj
@@ -6,8 +6,8 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <InvariantGlobalization>true</InvariantGlobalization>
     <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
-    <AssemblyVersion>1.0.4.5</AssemblyVersion>
-    <FileVersion>1.0.4.5</FileVersion>
+    <AssemblyVersion>1.0.5.6</AssemblyVersion>
+    <FileVersion>1.0.5.6</FileVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/Netina.Api/Properties/launchSettings.json b/Netina.Api/Properties/launchSettings.json
index 6e06a47..8d264f8 100644
--- a/Netina.Api/Properties/launchSettings.json
+++ b/Netina.Api/Properties/launchSettings.json
@@ -26,7 +26,7 @@
         "ASPNETCORE_URLS": "http://+:80"
       },
       "publishAllPorts": true,
-      "DockerfileRunArguments": " --network=mother -p 32780:80"
+      "DockerfileRunArguments": " --network=mother -p 32770:80"
     }
   },
   "$schema": "http://json.schemastore.org/launchsettings.json",
diff --git a/Netina.Core/EntityServices/DiscountHandlers/CalculateOrderDiscountCommandHandler.cs b/Netina.Core/EntityServices/DiscountHandlers/CalculateOrderDiscountCommandHandler.cs
index 51b87ce..ba1c7ac 100644
--- a/Netina.Core/EntityServices/DiscountHandlers/CalculateOrderDiscountCommandHandler.cs
+++ b/Netina.Core/EntityServices/DiscountHandlers/CalculateOrderDiscountCommandHandler.cs
@@ -24,9 +24,15 @@ public class CalculateOrderDiscountCommandHandler : IRequestHandler<CalculateOrd
 
         if (_currentUserService.UserId != null && Guid.TryParse(_currentUserService.UserId, out Guid userId))
         {
+            var customer = await _repositoryWrapper.SetRepository<Customer>()
+                .TableNoTracking
+                .FirstOrDefaultAsync(c => c.UserId == userId, cancellationToken);
+            if (customer == null)
+                throw new BaseApiException(ApiResultStatusCode.NotFound, "Customer not found");
+
             var discountedUserOrder = await _repositoryWrapper.SetRepository<Order>()
                 .TableNoTracking
-                .FirstOrDefaultAsync(f => f.CustomerId == userId && f.DiscountCode == discount.Code, cancellationToken);
+                .FirstOrDefaultAsync(f => f.CustomerId == customer.Id && f.DiscountCode == discount.Code, cancellationToken);
             if (discountedUserOrder != null)
                 throw new AppException("شما یک بار از این کد تخفیف استفاده کرده اید", ApiResultStatusCode.BadRequest);
         }