diff --git a/Help.hs b/Help.hs
--- a/Help.hs
+++ b/Help.hs
@@ -75,9 +75,12 @@
 \\n\
 \HISTORY\n\
 \\n\
+\  0.0.7.2\n\
+\  - Fixed a pattern-matching bug with the new translation value: default\n\
+\\n\
 \  0.0.7\n\
 \  - Support for invocation files\n\
-\  - Support for calculating step sizes by dividing the scan area\n\
+\  - Support for calculating the step size by dividing the scan area\n\
 \\n\
 \  0.0.6.2\n\
 \  - Fixed help output\n\
diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -176,10 +176,6 @@
 -- | new run function
 run :: ExploreInvocation -> IO ()
 run invocation@(Explore imgPath legend matching area stepSize translation) = do
-  -- display internal normalized invocation
-  -- putStrLn $ "invoc.: " ++ show invocation
-  -- putStrLn $ ""
-
   -- initialize image
   Right img <- loadPNGFile imgPath
   let bitmap  = imageData  img
@@ -220,13 +216,12 @@
   mapM_ (putStrLn . show) legend
 
   -- scan bitmap
-  mapM_ (scan bitmap translation box icols rows (@#) (~=)) legend
+  mapM_ (scan bitmap trans box icols rows (@#) (~=)) legend
 
+-- | converts step-size representations
 convertStepSize :: Double -> StepSize -> StepSize
 convertStepSize width (ConstantJump  size ) = WidthDivision $ width / size
 convertStepSize width (WidthDivision parts) = ConstantJump  $ width / parts
-
-
 
 -- | a very simple scanning algorithm that works only if no lines
 --   occlude each other.
diff --git a/explore.cabal b/explore.cabal
--- a/explore.cabal
+++ b/explore.cabal
@@ -1,5 +1,5 @@
 name:                explore
-version:             0.0.7.1
+version:             0.0.7.2
 cabal-version:       >= 1.4
 license:             BSD3
 license-file:        LICENSE