diff --git a/Mutators/InternalExpressionExtensions.cs b/Mutators/InternalExpressionExtensions.cs
index 62dfcb9..9cd429d 100644
--- a/Mutators/InternalExpressionExtensions.cs
+++ b/Mutators/InternalExpressionExtensions.cs
@@ -102,7 +102,7 @@ public static string CustomFieldName(this Expression node)
         {
             var result = new StringBuilder();
             BuildCustomFieldName(node, result);
-            return string.Intern(result.ToString());
+            return result.ToString();
         }
 
         public static Expression ExtendSelectMany(this Expression expression)
@@ -308,7 +308,7 @@ private static void BuildCustomFieldName(Expression node, StringBuilder result)
                 BuildCustomFieldName(memberExpression.Expression, result);
                 if (result.Length > 0)
                     result.Append("ё");
-                result.Append(string.Intern(memberExpression.Member.Name));
+                result.Append(memberExpression.Member.Name);
                 break;
             case ExpressionType.Call:
                 var methodCallExpression = (MethodCallExpression)node;