diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,7 @@
+### 0.5.1.1
+
+- Collect *libffi* library unconditionally.
+
 ### 0.5.1.0
 
 - Collect *libffi* library if it was shipped with GHC.
diff --git a/NgxExport/Distribution.hs b/NgxExport/Distribution.hs
--- a/NgxExport/Distribution.hs
+++ b/NgxExport/Distribution.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE TupleSections, TypeApplications #-}
+{-# LANGUAGE TupleSections #-}
 
 -----------------------------------------------------------------------------
 -- |
@@ -307,15 +307,13 @@
 -- With all the building approaches shown above, the following list of drawbacks
 -- must be taken into account.
 --
--- - Utility /nhm-tool/ collects only libraries prefixed with /libHS/ (and
---   /libffi/ if it was shipped with GHC),
+-- - Utility /nhm-tool/ collects only libraries prefixed with /libHS/ and
+--   /libffi.so/,
 -- - clean commands such as /cabal v1-clean/ do not delete build artifacts in
 --   the current working directory,
 -- - behavior of Cabal commands other than /configure/, /build/ and /clean/ is
 --   not well defined.
 
-type GhcInfo = [(String, String)]
-
 nhmTool :: Program
 nhmTool = simpleProgram "nhm-tool"
 
@@ -393,8 +391,8 @@
 --   libraries in a /tar.gz/ file.
 --
 -- All steps are performed by utility /nhm-tool/. It collects all libraries
--- with prefix /libHS/ (and /libffi/ if it was shipped with GHC) from the list
--- returned by command /ldd/ applied to the shared library.
+-- with prefix /libHS/ and /libffi.so/ from the list returned by command /ldd/
+-- applied to the shared library.
 patchAndCollectDependentLibs :: Verbosity           -- ^ Verbosity level
                              -> FilePath            -- ^ Path to the library
                              -> PackageDescription  -- ^ Package description
@@ -407,16 +405,9 @@
         rpathArg = maybe [] (("-t" :) . pure . (</> dir) . fromPathTemplate) $
             flagToMaybe $ prefix $ configInstallDirs $ configFlags lbi
         archiveArg = "-a" : [prettyShow $ package desc]
-    ghcP <- fst <$> requireProgram verbosity ghcProgram (withPrograms lbi)
-    let ghcR = programInvocation ghcP ["--info"]
-    useLibFFI <- (Just "YES" ==) . lookup "Use LibFFI" . read @GhcInfo <$>
-        getProgramInvocationOutput verbosity ghcR
     nhmToolP <- fst <$> requireProgram verbosity nhmTool (withPrograms lbi)
-    let nhmToolArgs = rpathArg ++ dirArg ++ archiveArg
-        nhmToolR = programInvocation nhmToolP $
-            "dist" : lib : "-v" : if useLibFFI
-                                      then "-ffi" : nhmToolArgs
-                                      else nhmToolArgs
+    let nhmToolR = programInvocation nhmToolP $
+            "dist" : lib : "-v" : rpathArg ++ dirArg ++ archiveArg
     runProgramInvocation verbosity nhmToolR
 
 -- | Build hooks.
diff --git a/ngx-export-distribution.cabal b/ngx-export-distribution.cabal
--- a/ngx-export-distribution.cabal
+++ b/ngx-export-distribution.cabal
@@ -1,5 +1,5 @@
 name:                       ngx-export-distribution
-version:                    0.5.1.0
+version:                    0.5.1.1
 synopsis:                   Build custom libraries for Nginx haskell module
 description:                Build custom libraries for
         <https://github.com/lyokha/nginx-haskell-module Nginx haskell module>.
diff --git a/nhm-tool.hs b/nhm-tool.hs
--- a/nhm-tool.hs
+++ b/nhm-tool.hs
@@ -27,7 +27,6 @@
 data DistData = DistData { distDataDir :: String
                          , distDataArchive :: String
                          , distDataTargetDir :: String
-                         , distDataCollectLibFFI :: Bool
                          , distDataPatchOnly :: Bool
                          , distDataTargetLib :: String
                          , distDataWait :: Maybe ArgWait
@@ -73,7 +72,7 @@
     putStrLn "Usage:"
     when (isNothing section || section == Just HelpDist) $
         T.putStrLn $ T.concat ["\n\
-        \  * nhm-tool dist [-d dir -a ar -ffi | -p] [-t target_dir] [-v | -vv] \
+        \  * nhm-tool dist [-d dir -a ar | -p] [-t target_dir] [-v | -vv] \
         \lib\n\n\
         \    collect Haskell libraries on which 'lib' depends,\n\
         \    patch 'lib' to enable loading dependent libraries from \
@@ -86,7 +85,6 @@
         \      'dir' (no default, the archive will not be created if omitted)\n\
         \    if '-p' (patch-only) is specified then dependent libraries will\n\
         \      neither be collected nor archived\n\
-        \    if '-ffi' is specified then libffi will also be collected\n\
         \    use options '-v' and '-vv' to increase verbosity level\n\
         \    special value '-' for 'dir', 'target_dir', and 'ar' resets them\n\
         \      (with -d- being equivalent to -p)"
@@ -123,7 +121,7 @@
     case head args of
         "dist" -> do
             let distData = foldl parseDistArgs (Just defaultArgs) $ tail args
-                defaultArgs = DistData defaultDistDataDir "" "" False False ""
+                defaultArgs = DistData defaultDistDataDir "" "" False ""
                     Nothing normal normal False
             case distData of
                 Nothing -> usage (Just HelpDist) False
@@ -193,8 +191,6 @@
                         if optLong
                             then Just dist' { distDataArchive = optValue }
                             else Just dist { distDataWait = Just ArgWaitA }
-                  | "-ffi" == arg ->
-                        Just dist' { distDataCollectLibFFI = True }
                   | "-p" == arg ->
                         Just dist' { distDataPatchOnly = True }
                   | "-v" == arg ->
@@ -306,9 +302,7 @@
               let recsLibHS = M.fromList $
                       mapMaybe (\case
                                     LibHS name path -> Just (name, path)
-                                    LibFFI name path
-                                        | distDataCollectLibFFI ->
-                                            Just (name, path)
+                                    LibFFI name path -> Just (name, path)
                                     _ -> Nothing
                                ) recs
               if M.null recsLibHS