diff --git a/install/src/HlsInstall.hs b/install/src/HlsInstall.hs
index 889a8fdff8..13396763da 100644
--- a/install/src/HlsInstall.hs
+++ b/install/src/HlsInstall.hs
@@ -75,7 +75,7 @@ defaultMain = do
     -- stack specific targets
     -- Default `stack.yaml` uses ghc-8.8.2 and we can't build hls in windows
     -- TODO: Enable for windows when it uses ghc-8.8.3
-    when (isRunFromStack && not isWindowsSystem) $
+    when isRunFromStack $
       phony "dev" $ do
         need ["show-options"]
         stackInstallHlsWithErrMsg Nothing args
diff --git a/install/src/Stack.hs b/install/src/Stack.hs
index 8052b65247..7c71088d33 100644
--- a/install/src/Stack.hs
+++ b/install/src/Stack.hs
@@ -22,8 +22,8 @@ stackInstallHls mbVersionNumber args = do
       Nothing -> do
         execStackWithCfgFile_ "stack.yaml" $ 
           ["install"
-          , "haskell-language-server-wrapper"
-          , "haskell-language-server"] ++ args
+          , ":haskell-language-server-wrapper"
+          , ":haskell-language-server"] ++ args
         getGhcVersionOfCfgFile "stack.yaml" args
       Just vn -> do
         execStackWithGhc_ vn $ ["install"] ++ args