diff --git a/configure.bat b/configure.bat
index 54fa2b2110..c78daf6e3b 100644
--- a/configure.bat
+++ b/configure.bat
@@ -103,7 +103,7 @@ goto doneargs
 cd "%TOPQTDIR%"
 
 rem Write config.opt if we're not currently -redo'ing
-if "%rargs%" == "" (
+if "!rargs!" == "" (
     echo %*>config.opt.in
     cmake -DIN_FILE=config.opt.in -DOUT_FILE=config.opt -DIGNORE_ARGS=-top-level -P "%QTSRC%\cmake\QtWriteArgsFile.cmake"
 )