diff --git a/ms-windows/osgeo4w/package.cmd b/ms-windows/osgeo4w/package.cmd
index f045164c8717..4ae3f93f5760 100644
--- a/ms-windows/osgeo4w/package.cmd
+++ b/ms-windows/osgeo4w/package.cmd
@@ -28,7 +28,7 @@ if "%PACKAGENAME%"=="" goto usage
 if "%ARCH%"=="" goto usage
 if not "%SHA%"=="" set SHA=-%SHA%
 if "%SITE%"=="" set SITE=qgis.org
-if "%BUILDNAME%=="" set BUILDNAME=%PACKAGENAME%-%VERSION%%SHA%-Release-VC14-%ARCH%
+if "%BUILDNAME%"=="" set BUILDNAME=%PACKAGENAME%-%VERSION%%SHA%-Release-VC14-%ARCH%
 
 set BUILDDIR=%CD%\build-%PACKAGENAME%-%ARCH%
 if not exist "%BUILDDIR%" mkdir %BUILDDIR%