diff --git a/lib/mssql_ecto/query_string.ex b/lib/mssql_ecto/query_string.ex
index 16abc98..909e187 100644
--- a/lib/mssql_ecto/query_string.ex
+++ b/lib/mssql_ecto/query_string.ex
@@ -41,7 +41,7 @@ defmodule MssqlEcto.QueryString do
   end
 
   def top(%Query{offset: nil, limit: %QueryExpr{expr: expr}} = query, sources) do
-    [" TOP ", expr(expr, sources, query)]
+    [" TOP(", expr(expr, sources, query), ")"]
   end
 
   def top(_, _) do