diff --git a/cv-combinators.cabal b/cv-combinators.cabal
--- a/cv-combinators.cabal
+++ b/cv-combinators.cabal
@@ -1,5 +1,5 @@
 name: cv-combinators
-version: 0.2.0.1
+version: 0.2.0.2
 license: GPL-2
 license-file: LICENSE
 maintainer: Noam Lewis <jones.noamle@gmail.com>
diff --git a/src/AI/CV/ImageProcessors.hs b/src/AI/CV/ImageProcessors.hs
--- a/src/AI/CV/ImageProcessors.hs
+++ b/src/AI/CV/ImageProcessors.hs
@@ -98,7 +98,7 @@
 
           fromState (image, _) = return image
 
-          releaseNext (_, cap) = return ()
+          releaseNext _ = return ()
 
 
 -- | A capture device, using OpenCV's HighGui lib's cvCreateCameraCapture
@@ -175,7 +175,7 @@
 
           convertState = return . snd
 
-          releaseState (gray, target) = return ()
+          releaseState _ = return ()
 
 ------------------------------------------------------------------
 
@@ -203,7 +203,7 @@
 
           convFunc = return . fst
 
-          freeFunc (_, (_, storage)) = return ()
+          freeFunc _ = return ()
             -- todo release the cascade usign cvReleaseHaarClassifierCascade