diff --git a/Data/X509/Validation.hs b/Data/X509/Validation.hs
--- a/Data/X509/Validation.hs
+++ b/Data/X509/Validation.hs
@@ -80,14 +80,14 @@
     } deriving (Show,Eq)
 
 -- | Default checks to perform
-defaultChecks :: String -- ^ fully qualified host name that we need to match in the certificate
+defaultChecks :: Maybe String -- ^ fully qualified host name that we need to match in the certificate
               -> Checks
 defaultChecks fqhn = Checks
     { checkTimeValidity   = True
     , checkStrictOrdering = False
     , checkCAConstraints  = True
     , checkExhaustive     = False
-    , checkFQHN           = Just fqhn
+    , checkFQHN           = fqhn
     }
 
 -- | validate a certificate chain.
diff --git a/Data/X509/Validation/Signature.hs b/Data/X509/Validation/Signature.hs
--- a/Data/X509/Validation/Signature.hs
+++ b/Data/X509/Validation/Signature.hs
@@ -65,7 +65,6 @@
                                                             else SignatureFailed
     | otherwise                       = SignaturePubkeyMismatch
   where
-
         verifyF (PubKeyRSA key) = Just $ RSA.verify (toDescr hashALG) key
         verifyF (PubKeyDSA key)
             | hashALG == HashSHA1 = Just $ \a b -> case dsaToSignature a of
diff --git a/x509-validation.cabal b/x509-validation.cabal
--- a/x509-validation.cabal
+++ b/x509-validation.cabal
@@ -1,5 +1,5 @@
 Name:                x509-validation
-Version:             1.4.2
+Version:             1.4.3
 Description:         X.509 Certificate and CRL validation
 License:             BSD3
 License-file:        LICENSE
@@ -38,3 +38,4 @@
 source-repository head
   type:     git
   location: git://github.com/vincenthz/hs-certificate
+  subdir:   x509-validation