diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index c84f1000b39..32dcdb3c86e 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -391,7 +391,6 @@ def cmd_msbuild(
     "libavif": {
         "url": f"https://github.com/AOMediaCodec/libavif/archive/v{V['LIBAVIF']}.zip",
         "filename": f"libavif-{V['LIBAVIF']}.zip",
-        "dir": f"libavif-{V['LIBAVIF']}",
         "license": "LICENSE",
         "build": [
             f"{sys.executable} -m pip install meson",