diff --git a/lib/ast.ml b/lib/ast.ml
index 3eeeed2..39ffba0 100644
--- a/lib/ast.ml
+++ b/lib/ast.ml
@@ -81,7 +81,6 @@ and sign =
   | Times
   | Divide
 
-
 let rec pp_query fmt ast = 
   match ast with
   | Select(cols, table_exp) ->  Format.fprintf fmt "%s" (String.cat "SELECT " (pp_columns cols) ^ pp_table_expression table_exp)