diff --git a/README.md b/README.md
index 176480c..9b7f0f7 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
 # direct-rocksdb
 
 [![CircleCI](https://circleci.com/gh/TerrorJack/direct-rocksdb/tree/master.svg?style=shield)](https://circleci.com/gh/TerrorJack/direct-rocksdb/tree/master)
-[![AppVeyor](https://ci.appveyor.com/api/projects/status/github/TerrorJack/direct-rocksdb?branch=master&svg=true)](https://ci.appveyor.com/project/TerrorJack/direct-rocksdb?branch=master)
 [![Hackage](https://img.shields.io/hackage/v/direct-rocksdb.svg)](https://hackage.haskell.org/package/direct-rocksdb)
 [![Stackage Nightly](https://www.stackage.org/package/direct-rocksdb/badge/nightly)](https://www.stackage.org/nightly/package/direct-rocksdb)
 
@@ -29,4 +28,4 @@ Some RocksDB functions require passing in a pointer to an error message buffer f
 
 ## About Windows support
 
-Requires `cmake` and Visual Studio 2017.
+Unsupported for now.
diff --git a/Setup.hs b/Setup.hs
index e637eb1..4fc94f4 100644
--- a/Setup.hs
+++ b/Setup.hs
@@ -68,8 +68,6 @@ main =
                       , "rocksdb"
                       , "--config"
                       , "Release"
-                      , "--"
-                      , "/m"
                       ]
                     copyFile ("Release" </> "rocksdb.lib") $
                       lib_installdir </> rocksdb_libname <.> "lib"
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index 7097fd6..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-version: 0.0.1.{build}
-
-shallow_clone: true
-
-image: Visual Studio 2017
-
-cache:
-  - "%APPDATA%\\stack"
-
-build_script:
-  - choco install haskell-stack
-  - stack --no-terminal setup > NUL
-  - stack --no-terminal exec pacman -- -Syu --force --noconfirm --noprogressbar
-  - stack --no-terminal exec pacman -- -Syu --force --noconfirm --noprogressbar
-  - stack --no-terminal exec pacman -- -S mingw-w64-x86_64-cmake --force --needed --noconfirm --noprogressbar
-  - stack --no-terminal test --haddock
-
-test: off