2 files changed, 3 insertions, 2 deletions

diff --git a/lib/Data/Packed/Development.hs b/lib/Data/Packed/Development.hs
index 6098e03..9b8dacf 100644
--- a/lib/Data/Packed/Development.hs
+++ b/lib/Data/Packed/Development.hs
@@ -23,7 +23,8 @@ module Data.Packed.Development (
     MatrixOrder(..), orderOf, cmat, fmat,
     unsafeFromForeignPtr,
     unsafeToForeignPtr,
-    check, (//)
+    check, (//),
+    at', atM'
 ) where
 
 import Data.Packed.Internal
diff --git a/lib/Data/Packed/Internal/Matrix.hs b/lib/Data/Packed/Internal/Matrix.hs
index 5d05e50..d4b0bc1 100644
--- a/lib/Data/Packed/Internal/Matrix.hs
+++ b/lib/Data/Packed/Internal/Matrix.hs
@@ -29,7 +29,7 @@ module Data.Packed.Internal.Matrix(
     matrixFromVector,
     subMatrix,
     liftMatrix, liftMatrix2,
-    (@@>),
+    (@@>), atM',
     saveMatrix,
     singleton,
     size, shSize, conformVs, conformMs, conformVTo, conformMTo