2 files changed, 2 insertions, 2 deletions

diff --git a/packages/base/hmatrix.cabal b/packages/base/hmatrix.cabal
index 9fa3c4e..5524d2b 100644
--- a/packages/base/hmatrix.cabal
+++ b/packages/base/hmatrix.cabal
@@ -79,8 +79,7 @@ library
                         src/Internal/C/vector-aux.c
 
 
-    extensions:         ForeignFunctionInterface,
-                        CPP
+    extensions:         ForeignFunctionInterface
 
     ghc-options:        -Wall
                         -fno-warn-missing-signatures
diff --git a/packages/base/src/Internal/Static.hs b/packages/base/src/Internal/Static.hs
index 419ff07..61be456 100644
--- a/packages/base/src/Internal/Static.hs
+++ b/packages/base/src/Internal/Static.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 #if __GLASGOW_HASKELL__ >= 708
 
 {-# LANGUAGE DataKinds #-}