diff --git a/.appveyor.yml b/.appveyor.yml
index 25439b5e..2983f6a9 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -10,7 +10,7 @@ init:
 install:
   # Download and unpack Vim
   - ps: >-
-      if (!Test-Path -Path C:\vim)) {
+      if (!(Test-Path -Path C:\vim)){
         Add-Type -A System.IO.Compression.FileSystem
         Invoke-WebRequest ftp://ftp.vim.org/pub/vim/pc/vim80-586w32.zip `
           -OutFile C:\vim.zip