diff --git a/BaseTools/toolsetup.bat b/BaseTools/toolsetup.bat
index 76fd8bb6ef..c1ab9bcc8d 100755
--- a/BaseTools/toolsetup.bat
+++ b/BaseTools/toolsetup.bat
@@ -160,13 +160,16 @@ if not defined WORKSPACE (
    goto skip_reconfig
 )
 
-set CONF_PATH=%WORKSPACE%\Conf
-if NOT exist %CONF_PATH% (
-  if defined PACKAGES_PATH (
-    for %%i IN (%PACKAGES_PATH%) DO (
-      if exist %%~fi\Conf (
-        set CONF_PATH=%%i\Conf
-        goto CopyConf
+if not defined CONF_PATH (
+  set CONF_PATH=%WORKSPACE%\Conf
+
+  if NOT exist %CONF_PATH% (
+    if defined PACKAGES_PATH (
+      for %%i IN (%PACKAGES_PATH%) DO (
+        if exist %%~fi\Conf (
+          set CONF_PATH=%%i\Conf
+          goto CopyConf
+        )
       )
     )
   )