1 files changed, 1 insertions, 0 deletions

diff --git a/lib/Numeric/GSL/Vector.hs b/lib/Numeric/GSL/Vector.hs
index 92cda87..0366744 100644
--- a/lib/Numeric/GSL/Vector.hs
+++ b/lib/Numeric/GSL/Vector.hs
@@ -21,6 +21,7 @@ module Numeric.GSL.Vector (
 ) where
 
 import Data.Packed.Internal.Common
+import Data.Packed.Internal.Signatures
 import Data.Packed.Internal.Vector
 
 import Complex