1 files changed, 2 insertions, 1 deletions

diff --git a/Codec/Encryption/OpenPGP/ASCIIArmor/Multipart.hs b/Codec/Encryption/OpenPGP/ASCIIArmor/Multipart.hs
index 385074f..0334c7e 100644
--- a/Codec/Encryption/OpenPGP/ASCIIArmor/Multipart.hs
+++ b/Codec/Encryption/OpenPGP/ASCIIArmor/Multipart.hs
@@ -13,11 +13,12 @@ import Data.ByteString.Lazy (ByteString)
 import qualified Data.ByteString.Lazy as BL
 
 multipartMerge :: [Armor] -> Armor
-multipartMerge as = go as (Armor ArmorMessage [] BL.empty)
+multipartMerge as' = go as' (Armor ArmorMessage [] BL.empty)
     where
         go :: [Armor] -> Armor -> Armor
         go [] state = state
         go (Armor at hs bs:as) state = go as (go' at hs bs state)
+        go _ _ = error "This shouldn't happen."
         go' :: ArmorType -> [(String,String)] -> ByteString -> Armor -> Armor
         go' (ArmorSplitMessage _ _) hs bs (Armor _ ohs obs) = Armor ArmorMessage (ohs ++ hs) (obs `BL.append` bs)
         go' (ArmorSplitMessageIndefinite _) hs bs (Armor _ ohs obs) = Armor ArmorMessage (ohs ++ hs) (obs `BL.append` bs)