1 files changed, 2 insertions, 1 deletions

diff --git a/lib/Numeric/GSL/Special/Dawson.hs b/lib/Numeric/GSL/Special/Dawson.hs
index 1d77a2b..3a47570 100644
--- a/lib/Numeric/GSL/Special/Dawson.hs
+++ b/lib/Numeric/GSL/Special/Dawson.hs
@@ -20,6 +20,7 @@ module Numeric.GSL.Special.Dawson(
 ) where
 
 import Foreign(Ptr)
+import Foreign.C.Types(CInt)
 import Numeric.GSL.Special.Internal
 
 -- | wrapper for int gsl_sf_dawson_e(double x,gsl_sf_result* result);
@@ -27,7 +28,7 @@ import Numeric.GSL.Special.Internal
 --   <http://www.google.com/search?q=gsl_sf_dawson_e&as_sitesearch=www.gnu.org/software/gsl/manual&btnI=Lucky>
 dawson_e :: Double -> (Double,Double)
 dawson_e x = createSFR "dawson_e" $ gsl_sf_dawson_e x
-foreign import ccall "dawson.h gsl_sf_dawson_e" gsl_sf_dawson_e :: Double -> Ptr Double -> IO(Int)
+foreign import ccall "dawson.h gsl_sf_dawson_e" gsl_sf_dawson_e :: Double -> Ptr () -> IO CInt
 
 -- | wrapper for double gsl_sf_dawson(double x);
 --