diff --git a/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/Conventions/AbpServiceConvention.cs b/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/Conventions/AbpServiceConvention.cs
index 946be023cc..3b4efd8bf1 100644
--- a/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/Conventions/AbpServiceConvention.cs
+++ b/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/Conventions/AbpServiceConvention.cs
@@ -81,7 +81,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Conventions
                         continue;
                     }
 
-                    if (!TypeHelper.IsPrimitiveExtendedIncludingNullable(prm.ParameterInfo.ParameterType))
+                    if (!TypeHelper.IsPrimitiveExtended(prm.ParameterInfo.ParameterType))
                     {
                         if (CanUseFormBodyBinding(action, prm))
                         {
diff --git a/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/DynamicProxying/DynamicHttpProxyInterceptor.cs b/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/DynamicProxying/DynamicHttpProxyInterceptor.cs
index 21f36577d8..9d614687df 100644
--- a/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/DynamicProxying/DynamicHttpProxyInterceptor.cs
+++ b/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/DynamicProxying/DynamicHttpProxyInterceptor.cs
@@ -60,7 +60,7 @@ namespace Volo.Abp.Http.Client.DynamicProxying
                 var responseAsString = AsyncHelper.RunSync(() => MakeRequest(invocation));
 
                 //TODO: Think on that
-                if (TypeHelper.IsPrimitiveExtendedIncludingNullable(invocation.Method.ReturnType, true))
+                if (TypeHelper.IsPrimitiveExtended(invocation.Method.ReturnType, true))
                 {
                     invocation.ReturnValue = Convert.ChangeType(responseAsString, invocation.Method.ReturnType);
                 }
@@ -93,7 +93,7 @@ namespace Volo.Abp.Http.Client.DynamicProxying
             var responseAsString = await MakeRequest(invocation);
 
             //TODO: Think on that
-            if (TypeHelper.IsPrimitiveExtendedIncludingNullable(typeof(T), true))
+            if (TypeHelper.IsPrimitiveExtended(typeof(T), true))
             {
                 return (T)Convert.ChangeType(responseAsString, typeof(T));
             }
diff --git a/src/Volo.Abp.Validation/Volo/Abp/Validation/MethodInvocationValidator.cs b/src/Volo.Abp.Validation/Volo/Abp/Validation/MethodInvocationValidator.cs
index bf266b3936..d99b3a0f51 100644
--- a/src/Volo.Abp.Validation/Volo/Abp/Validation/MethodInvocationValidator.cs
+++ b/src/Volo.Abp.Validation/Volo/Abp/Validation/MethodInvocationValidator.cs
@@ -89,7 +89,7 @@ namespace Volo.Abp.Validation
         {
             var allowNulls = parameterInfo.IsOptional ||
                              parameterInfo.IsOut ||
-                             TypeHelper.IsPrimitiveExtendedIncludingNullable(parameterInfo.ParameterType, includeEnums: true);
+                             TypeHelper.IsPrimitiveExtended(parameterInfo.ParameterType, includeEnums: true);
 
             context.Errors.AddRange(_objectValidator.GetErrors(parameterValue, parameterInfo.Name, allowNulls));
         }
diff --git a/src/Volo.Abp.Validation/Volo/Abp/Validation/ObjectValidator.cs b/src/Volo.Abp.Validation/Volo/Abp/Validation/ObjectValidator.cs
index 315652b78c..2d92af7221 100644
--- a/src/Volo.Abp.Validation/Volo/Abp/Validation/ObjectValidator.cs
+++ b/src/Volo.Abp.Validation/Volo/Abp/Validation/ObjectValidator.cs
@@ -86,7 +86,7 @@ namespace Volo.Abp.Validation
             var validatingObjectType = validatingObject.GetType();
 
             //Do not recursively validate for primitive objects
-            if (TypeHelper.IsPrimitiveExtendedIncludingNullable(validatingObjectType))
+            if (TypeHelper.IsPrimitiveExtended(validatingObjectType))
             {
                 return;
             }