diff --git a/secp256k1.cabal b/secp256k1.cabal
--- a/secp256k1.cabal
+++ b/secp256k1.cabal
@@ -1,5 +1,5 @@
 name:                secp256k1
-version:             0.1.6
+version:             0.1.7
 synopsis:            secp256k1 bindings for Haskell
 description:         Please see README.md
 homepage:            http://github.com/haskoin/secp256k1#readme
diff --git a/src/Crypto/Secp256k1.hs b/src/Crypto/Secp256k1.hs
--- a/src/Crypto/Secp256k1.hs
+++ b/src/Crypto/Secp256k1.hs
@@ -207,9 +207,11 @@
 getSecKey :: SecKey -> ByteString
 getSecKey (SecKey fk) = getSecKey32 $ unsafePerformIO $ withForeignPtr fk peek
 
+-- | Get 64-byte internal public key representation.
 getPubKey :: PubKey -> ByteString
 getPubKey (PubKey fp) = getPubKey64 $ unsafePerformIO $ withForeignPtr fp peek
 
+-- | Get 64-byte internal signature representation.
 getSig :: Sig -> ByteString
 getSig (Sig fg) = getSig64 $ unsafePerformIO $ withForeignPtr fg peek