diff --git a/app/Homplexity.hs b/app/Homplexity.hs
--- a/app/Homplexity.hs
+++ b/app/Homplexity.hs
@@ -162,18 +162,23 @@
 main :: IO ()
 main = do
   args <- $initHFlags ("Homplexity " ++ versionString ++ " - automatic analysis of Haskell code quality")
-  when flags_version $
-    report $ unwords ["Version: ", versionString]
-
-  if null args
-    then do report ("Use Haskell source file or directory as an argument, " ++
-                    "or use --help to discover options.")
-            exitFailure
-    else do exts <- cabalExtensions
-            sums <- mapM (processFile exts) =<< concatMapM subTrees args
-            report $ unwords ["Correctly parsed", show $ length $ filter P.id sums,
-                              "out of",           show $ length               sums,
-                              "input files."]
+  if flags_version
+     then do report $ unwords ["Homplexity version: ", versionString]
+             exitSuccess
+     else if null args
+             then do report ("Use Haskell source file or directory as an argument, " ++
+                             "or use --help to discover options.")
+                     exitFailure
+             else do exts <- cabalExtensions
+                     sums <- mapM (processFile exts) =<< concatMapM subTrees args
+                     let successes  = length $ filter P.id sums
+                         totalFiles = length               sums
+                     report $ unwords ["Correctly parsed", show successes,
+                                       "out of",           show totalFiles,
+                                       "input files."]
+                     if (successes == totalFiles)
+                        then exitSuccess
+                        else exitFailure
 
 cabalExtensions :: IO [Extension]
 cabalExtensions
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,8 @@
 Changelog
 =========
+    0.4.8.0  Mar 2020
+        * Do not return error when version number is requested.
+
     0.4.7.0  Mar 2020
         * Fix revision string for building without Git repo.
 
diff --git a/homplexity.cabal b/homplexity.cabal
--- a/homplexity.cabal
+++ b/homplexity.cabal
@@ -4,10 +4,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 9b7a4010118e557d9ed6c07e4c8969a49ea71a6772a5942598489c73c14bb3e0
+-- hash: f8472e1a914bbffeef9e1f8273601569d32a34529e483de131a5399de76f1198
 
 name:           homplexity
-version:        0.4.7.0
+version:        0.4.8.0
 synopsis:       Haskell code quality tool
 description:    Homplexity aims to measure code complexity,
                 warning about fragments that might have higher defect probability