2 files changed, 3 insertions, 3 deletions
diff --git a/src/runtime/haskell/Data/Binary/Builder.hs b/src/runtime/haskell/Data/Binary/Builder.hs
index b69371f0e..a74428f20 100644
--- a/src/runtime/haskell/Data/Binary/Builder.hs
+++ b/src/runtime/haskell/Data/Binary/Builder.hs
@@ -68,7 +68,7 @@ import qualified Data.ByteString.Lazy as L
 import Data.ByteString.Base (inlinePerformIO)
 import qualified Data.ByteString.Base as S
 #else
-import Data.ByteString.Internal (inlinePerformIO)
+import Data.ByteString.Internal (accursedUnutterablePerformIO)
 import qualified Data.ByteString.Internal as S
 --import qualified Data.ByteString.Lazy.Internal as L
 #endif
@@ -199,7 +199,7 @@ defaultSize = 32 * k - overhead
 
 -- | Sequence an IO operation on the buffer
 unsafeLiftIO :: (Buffer -> IO Buffer) -> Builder
-unsafeLiftIO f =  Builder $ \ k buf -> inlinePerformIO $ do
+unsafeLiftIO f =  Builder $ \ k buf -> accursedUnutterablePerformIO $ do
     buf' <- f buf
     return (k buf')
 {-# INLINE unsafeLiftIO #-}
diff --git a/src/runtime/haskell/Data/Binary/Get.hs b/src/runtime/haskell/Data/Binary/Get.hs
index 01561d7d9..54f17ae95 100644
--- a/src/runtime/haskell/Data/Binary/Get.hs
+++ b/src/runtime/haskell/Data/Binary/Get.hs
@@ -423,7 +423,7 @@ readN n f = fmap f $ getBytes n
 getPtr :: Storable a => Int -> Get a
 getPtr n = do
     (fp,o,_) <- readN n B.toForeignPtr
-    return . B.inlinePerformIO $ withForeignPtr fp $ \p -> peek (castPtr $ p `plusPtr` o)
+    return . B.accursedUnutterablePerformIO $ withForeignPtr fp $ \p -> peek (castPtr $ p `plusPtr` o)
 {- INLINE getPtr -}
 
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