diff --git a/xb.bat b/xb.bat
index 93e5786d6..9261171d5 100644
--- a/xb.bat
+++ b/xb.bat
@@ -42,7 +42,7 @@ SET "CANDIDATE_PATHS[3]=C:\python311\python.exe"
 SET "CANDIDATE_PATHS[4]=C:\python310\python.exe"
 SET "CANDIDATE_PATHS[5]=C:\python39\python.exe"
 SET "CANDIDATE_PATHS[6]=C:\python%PYTHON_MINIMUM_VERSION[0]%%PYTHON_MINIMUM_VERSION[1]%\python.exe"
-SET "CANDIDATE_PATHS[7]=C:\Windows\py.exe"
+SET "CANDIDATE_PATHS[7]=%WINDIR%\py.exe"
 SET OUTPUT_INDEX=8
 
 FOR /F "usebackq delims=" %%L IN (`2^>NUL where python3`) DO (