diff --git a/hsx.cabal b/hsx.cabal
--- a/hsx.cabal
+++ b/hsx.cabal
@@ -1,5 +1,5 @@
 Name:                   hsx
-Version:                0.9.0
+Version:                0.9.1
 License:                BSD3
 License-File:           LICENSE
 Author:                 Niklas Broberg, Joel Bjornson
@@ -36,7 +36,7 @@
 Flag base4
 
 Library
-  Build-depends:	mtl, haskell-src-exts >= 1.10, utf8-string
+  Build-depends:	mtl, haskell-src-exts >= 1.11, utf8-string
   if flag(base4)
     Build-depends:      base >= 4 && < 5
     cpp-options:        -DBASE4
diff --git a/src/Trhsx.hs b/src/Trhsx.hs
--- a/src/Trhsx.hs
+++ b/src/Trhsx.hs
@@ -64,7 +64,7 @@
                  transform $ checkParse $ parse fp fc
 
 parse :: String -> String -> ParseResult Module
-parse fn fc = parseModuleWithMode (ParseMode fn allExtensions False True baseFixities) fcuc
+parse fn fc = parseModuleWithMode (ParseMode fn allExtensions False True (Just baseFixities)) fcuc
   where fcuc= unlines $ filter (not . isPrefixOf "#") $ lines fc
 
 usageString :: String