1 files changed, 3 insertions, 3 deletions

diff --git a/src/Wavefront/Lex.hs b/src/Wavefront/Lex.hs
index 7123184..78c6f1d 100644
--- a/src/Wavefront/Lex.hs
+++ b/src/Wavefront/Lex.hs
@@ -377,9 +377,9 @@ data ParamSpec = ParamU | ParamV
  deriving (Eq,Ord,Show,Enum)
 
 data RefTriple = RefTriple
-        { refV :: Int
-        , refT :: Maybe Int
-        , refN :: Maybe Int
+        { refV :: {-# UNPACK #-} !Int
+        , refT :: !(Maybe Int)
+        , refN :: !(Maybe Int)
         }
 -- data RefTriple = RefTriple Int (Maybe Int) (Maybe Int)
  deriving (Eq,Ord,Show)