diff --git a/NETGenerator/NETGenerator.cs b/NETGenerator/NETGenerator.cs
index a0300d86a..04fe0f20c 100644
--- a/NETGenerator/NETGenerator.cs
+++ b/NETGenerator/NETGenerator.cs
@@ -8268,7 +8268,7 @@ namespace PascalABCCompiler.NETGenerator
 
         private bool EmitBox(IExpressionNode from, Type LocalType)
         {
-            if ((from.type.is_value_type || from.type.is_generic_parameter) && !(from is SemanticTree.INullConstantNode) && (LocalType == TypeFactory.ObjectType || TypeIsInterface(LocalType)))
+            if ((from.type.is_value_type || from.type.is_generic_parameter) && !(from is SemanticTree.INullConstantNode) && (LocalType == TypeFactory.ObjectType || TypeIsInterface(LocalType) || LocalType == TypeFactory.EnumType))
             {
                 il.Emit(OpCodes.Box, helper.GetTypeReference(from.type).tp);//упаковка
                 return true;
diff --git a/TestSuite/enum10.pas b/TestSuite/enum10.pas
new file mode 100644
index 000000000..728ac9f18
--- /dev/null
+++ b/TestSuite/enum10.pas
@@ -0,0 +1,12 @@
+type 
+  Days = (mon,Tue,Wed,Thi,Fri,Sat,Sun);
+
+procedure MyPrint(obj: object);
+begin
+  assert(obj.ToString() = 'Fri');
+end;  
+begin
+  var en: System.Enum;
+  en := fri;
+  MyPrint(en);
+end.
\ No newline at end of file