diff --git a/MuCheck-Hspec.cabal b/MuCheck-Hspec.cabal
--- a/MuCheck-Hspec.cabal
+++ b/MuCheck-Hspec.cabal
@@ -1,5 +1,5 @@
 name:                MuCheck-Hspec
-version:             0.2.0.0
+version:             0.2.1.0
 synopsis:            Automated Mutation Testing for Hspec tests
 description:         This package contains the test adapter for Hspec tests to use it with MuCheck
 homepage:            https://bitbucket.com/osu-testing/mucheck-hspec
@@ -19,13 +19,14 @@
 source-repository    this
   type:              git
   location:          https://bitbucket.org/osu-testing/mucheck-hspec.git
-  tag:               0.2.0.0
+  tag:               0.2.1.0
 
 executable mucheck-hspec
   build-depends:    base >=4 && <5,
                     hspec>=2.0,
                     hspec-core >= 2.0,
-                    MuCheck== 0.2.0.*
+                    MissingH >= 1.3,
+                    MuCheck== 0.2.1.*
   default-language: Haskell2010
   hs-source-dirs:   src
   main-is:          Main.hs
@@ -36,7 +37,8 @@
   build-depends:    base >=4 && <5,
                     hspec>=2.0,
                     hspec-core >= 2.0,
-                    MuCheck==0.2.0.*
+                    MissingH >= 1.3,
+                    MuCheck==0.2.1.*
   default-language: Haskell2010
   hs-source-dirs:   src
 
diff --git a/src/Main.hs b/src/Main.hs
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -11,13 +11,13 @@
   val <- getArgs
   case val of
     ("-h" : _ ) -> help
-    (fn : file : modulename : args) -> withArgs [] $ mucheck tsFn fn file modulename args
-    _ -> error "Need function file modulename [args]\n\tUse -h to get help"
-  where tsFn :: [MutantFilename] -> [InterpreterOutput HspecSummary] -> Summary
+    (fn : file : args) -> withArgs [] $ mucheck tsFn fn file args
+    _ -> error "Need function file [args]\n\tUse -h to get help"
+  where tsFn :: [Mutant] -> [InterpreterOutput HspecSummary] -> Summary
         tsFn = testSummary
 
 
 help :: IO ()
-help = putStrLn $ "mucheck function file modulename [args]\n" ++ showAS ["E.g:",
-       " mucheck-hspec qsort Examples/HspecTest.hs Examples.HspecTest spec"]
+help = putStrLn $ "mucheck function file [args]\n" ++ showAS ["E.g:",
+       " mucheck-hspec qsort Examples/HspecTest.hs spec"]
 
diff --git a/src/Test/MuCheck/TestAdapter/Hspec.hs b/src/Test/MuCheck/TestAdapter/Hspec.hs
--- a/src/Test/MuCheck/TestAdapter/Hspec.hs
+++ b/src/Test/MuCheck/TestAdapter/Hspec.hs
@@ -4,6 +4,7 @@
 import qualified Test.Hspec.Core.Runner as Hspec
 import Test.MuCheck.TestAdapter
 import Test.MuCheck.Utils.Print (showA, showAS)
+import Data.Hash.MD5 (md5s, Str(..))
 
 import Data.Typeable
 import Data.Either (partitionEithers)
@@ -17,11 +18,11 @@
   testSummary mutantFiles results = Summary logMsg
       where (errorCases, executedCases) = partitionEithers results
             [successCases, failureCases] = map (\c -> filter (c . snd) executedCases) [isSuccess, isFailure]
-            errorFiles = mutantFiles \\ map fst executedCases
+            errorFiles = map (\l -> ".mutants/" ++ (md5s $ Str l) ++ ".hs") mutantFiles \\ map fst executedCases
             logMsg = showAS ["Details:",
                              "Loading error files:", showA errorFiles,
                              "Loading error messages:", showA errorCases,
                              "Successes:", showA successCases,
                              "Failure:", showA failureCases]
-  isSuccess (Hspec.Summary { Hspec.summaryExamples = se, Hspec.summaryFailures = sf } ) = sf == 0
+  isSuccess (Hspec.Summary { Hspec.summaryExamples = _, Hspec.summaryFailures = sf } ) = sf == 0