1 files changed, 4 insertions, 2 deletions

diff --git a/lib/Numeric/GSL/Minimization.hs b/lib/Numeric/GSL/Minimization.hs
index 729f383..5770c91 100644
--- a/lib/Numeric/GSL/Minimization.hs
+++ b/lib/Numeric/GSL/Minimization.hs
@@ -62,10 +62,12 @@ module Numeric.GSL.Minimization (
 
 import Data.Packed.Internal
 import Data.Packed.Matrix
-import Foreign
-import Foreign.C.Types(CInt)
 import Numeric.GSL.Internal
 
+import Foreign.Ptr(Ptr, FunPtr, freeHaskellFunPtr)
+import Foreign.C.Types(CInt)
+import System.IO.Unsafe(unsafePerformIO)
+
 ------------------------------------------------------------------------
 
 {-# DEPRECATED minimizeNMSimplex "use minimize NMSimplex2 eps maxit sizes f xi" #-}