diff --git a/reroute.cabal b/reroute.cabal
--- a/reroute.cabal
+++ b/reroute.cabal
@@ -1,5 +1,5 @@
 name:                reroute
-version:             0.3.0.1
+version:             0.3.0.2
 synopsis:            abstract implementation of typed and untyped web routing
 description:         abstraction over how urls with/without parameters are mapped to their corresponding handlers
 homepage:            http://github.com/agrafix/reroute
@@ -33,7 +33,7 @@
                        transformers >=0.3,
                        unordered-containers >=0.2,
                        vector >=0.10,
-                       hvect >=0.1
+                       hvect >=0.2
   hs-source-dirs:      src
   default-language:    Haskell2010
   ghc-options: -Wall -fno-warn-orphans
diff --git a/src/Web/Routing/SafeRouting.hs b/src/Web/Routing/SafeRouting.hs
--- a/src/Web/Routing/SafeRouting.hs
+++ b/src/Web/Routing/SafeRouting.hs
@@ -8,7 +8,7 @@
 module Web.Routing.SafeRouting where
 
 import qualified Data.PolyMap as PM
-import Data.HVect hiding (null)
+import Data.HVect hiding (null, length)
 import qualified Data.HVect as HV
 import Web.Routing.AbstractRouter