diff --git a/SpotifyAPI.Docs/docs.cmd b/SpotifyAPI.Docs/docs.cmd
index b0dfddca..9207b871 100644
--- a/SpotifyAPI.Docs/docs.cmd
+++ b/SpotifyAPI.Docs/docs.cmd
@@ -1,7 +1,7 @@
 if "%APPVEYOR_PULL_REQUEST_NUMBER%" == "" (
   if "%APPVEYOR_REPO_BRANCH%" == "master" (
     echo Building docs...
-    pip install 'mkdocs<=0.16.3'
+    pip install "mkdocs<=0.16.3"
 
     cd ./SpotifyAPI.Docs
     mkdocs build --clean