diff --git a/2023/04.cpp b/2023/04.cpp
index 6c6bf35..a860980 100644
--- a/2023/04.cpp
+++ b/2023/04.cpp
@@ -35,9 +35,9 @@ struct Grammar : public qi::grammar<std::string::const_iterator, std::vector<Car
     using namespace qi::labels;
     cards = *card;
     card =
-      "Card" >> qi::ulong_long [ phx::bind(&Card::id, _val) = _1] >> ":" >>
-      (*qi::ulong_long) [ phx::bind(&Card::mine, _val) = _1] >> "|" >>
-      (*qi::ulong_long) [ phx::bind(&Card::winners, _val) = _1];
+      "Card" >>   qi::ulong_long  [ phx::bind(&Card::id     , _val) = _1] >>
+      ":"    >> (*qi::ulong_long) [ phx::bind(&Card::mine   , _val) = _1] >>
+      "|"    >> (*qi::ulong_long) [ phx::bind(&Card::winners, _val) = _1];
   }
 };