1 files changed, 1 insertions, 1 deletions

diff --git a/lib/Numeric/GSL/Differentiation.hs b/lib/Numeric/GSL/Differentiation.hs
index a3c1aea..1df58a1 100644
--- a/lib/Numeric/GSL/Differentiation.hs
+++ b/lib/Numeric/GSL/Differentiation.hs
@@ -22,7 +22,7 @@ module Numeric.GSL.Differentiation (
     derivBackward
 ) where
 
-import Foreign.C.Types(CInt)
+import Foreign.C.Types(CInt(..))
 import Foreign.Marshal.Alloc(malloc, free)
 import Foreign.Ptr(Ptr, FunPtr, freeHaskellFunPtr)
 import Foreign.Storable(peek)