diff --git a/src/Database/Esqueleto/Internal/Sql.hs b/src/Database/Esqueleto/Internal/Sql.hs
index afbfaf9..acdd68a 100644
--- a/src/Database/Esqueleto/Internal/Sql.hs
+++ b/src/Database/Esqueleto/Internal/Sql.hs
@@ -235,7 +235,7 @@ makeWhere _ _ = error "Esqueleto/Sql/makeWhere: never here (see GHC #6124)"
 
 
 parens :: TLB.Builder -> TLB.Builder
-parens b = "(" <> (b <> "(")
+parens b = "(" <> (b <> ")")
 
 
 -- | Class for mapping results coming from 'SqlQuery' into actual