diff --git a/src/native/corehost/build.cmd b/src/native/corehost/build.cmd
index e5f535467ad38b..ff40b5048a66be 100644
--- a/src/native/corehost/build.cmd
+++ b/src/native/corehost/build.cmd
@@ -5,7 +5,7 @@ setlocal
 :: Initialize the args that will be passed to cmake
 set "__sourceDir=%~dp0"
 :: remove trailing slash
-if %__sourceDir:~-1%==\ set "__ProjectDir=%__sourceDir:~0,-1%"
+if "%__sourceDir:~-1%"=="\" set "__sourceDir=%__sourceDir:~0,-1%"
 
 set "__RepoRootDir=%__sourceDir%\..\..\.."
 :: normalize