diff --git a/Cabal-syntax/src/Distribution/Compat/Binary.hs b/Cabal-syntax/src/Distribution/Compat/Binary.hs
index 8849fc13b10..4927ec1e69b 100644
--- a/Cabal-syntax/src/Distribution/Compat/Binary.hs
+++ b/Cabal-syntax/src/Distribution/Compat/Binary.hs
@@ -20,4 +20,4 @@ decodeOrFailIO :: Binary a => ByteString -> IO (Either String a)
 decodeOrFailIO bs =
   catch (evaluate (decode bs) >>= return . Right) handler
   where
-    handler (ErrorCallWithLocation str _) = return $ Left str
+    handler (ErrorCall str) = return $ Left str
diff --git a/Cabal-syntax/src/Distribution/Utils/Structured.hs b/Cabal-syntax/src/Distribution/Utils/Structured.hs
index 83ae28995a8..ec8463bd6d3 100644
--- a/Cabal-syntax/src/Distribution/Utils/Structured.hs
+++ b/Cabal-syntax/src/Distribution/Utils/Structured.hs
@@ -277,7 +277,7 @@ structuredDecodeOrFailIO :: (Binary.Binary a, Structured a) => LBS.ByteString ->
 structuredDecodeOrFailIO bs =
   catch (evaluate (structuredDecode bs) >>= return . Right) handler
   where
-    handler (ErrorCallWithLocation str _) = return $ Left str
+    handler (ErrorCall str) = return $ Left str
 
 -- | Lazily reconstruct a value previously written to a file.
 structuredDecodeFileOrFail :: (Binary.Binary a, Structured a) => FilePath -> IO (Either String a)