1 files changed, 5 insertions, 0 deletions

diff --git a/packages/base/src/Internal/Modular.hs b/packages/base/src/Internal/Modular.hs
index 1cae1ac..098817e 100644
--- a/packages/base/src/Internal/Modular.hs
+++ b/packages/base/src/Internal/Modular.hs
@@ -44,6 +44,7 @@ import Foreign.ForeignPtr(castForeignPtr)
 import Foreign.Storable
 import Data.Ratio
 import Data.Complex
+import Control.DeepSeq ( NFData(..) )
 
 
 
@@ -51,6 +52,10 @@ import Data.Complex
 newtype Mod (n :: Nat) t = Mod {unMod:: t}
   deriving (Storable)
 
+instance (NFData t) => NFData (Mod n t)
+  where
+    rnf (Mod x) = rnf x
+
 infixr 5 ./.
 type (./.) x n = Mod n x