diff --git a/Tools/ide/common/sming.py b/Tools/ide/common/sming.py
index c86f48354b..ac666a0482 100644
--- a/Tools/ide/common/sming.py
+++ b/Tools/ide/common/sming.py
@@ -49,7 +49,6 @@ def subst_path(self, path, prefix=''):
         path = self.replace(path, 'SMING_HOME', prefix)
         path = self.replace(path, 'ESP_HOME', prefix)
         path = self.replace(path, 'IDF_PATH', prefix)
-        path = self.replace(path, 'IDF_TOOLS_PATH', prefix)
         return path
 
     def isWsl(self):