diff --git a/src/Data/Terminfo/Eval.hs b/src/Data/Terminfo/Eval.hs
index 43bac73..afb1874 100644
--- a/src/Data/Terminfo/Eval.hs
+++ b/src/Data/Terminfo/Eval.hs
@@ -5,7 +5,7 @@
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE NoMonomorphismRestriction #-}
 {-# LANGUAGE NamedFieldPuns #-}
-{-# OPTIONS_GHC -funbox-strict-fields -O #-}
+{-# OPTIONS_GHC -funbox-strict-fields #-}
 {- Evaluates the paramaterized terminfo string capability with the given parameters.
  -
  - todo: This can be greatly simplified.
diff --git a/vty.cabal b/vty.cabal
index e212ca4..486143c 100644
--- a/vty.cabal
+++ b/vty.cabal
@@ -97,6 +97,6 @@ Extra-Source-Files: test/Makefile
                     cbits/set_term_timing.c
                     cbits/gwinsz.h
 
-ghc-options:         -funbox-strict-fields -Wall -fno-full-laziness -fspec-constr
-ghc-prof-options:    -funbox-strict-fields -caf-all -Wall -fno-full-laziness -fspec-constr
+ghc-options:         -O2 -funbox-strict-fields -Wall -fno-full-laziness -fspec-constr
+ghc-prof-options:    -O2 -funbox-strict-fields -caf-all -Wall -fno-full-laziness -fspec-constr