diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 76b3bb4..50c4667 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -78,7 +78,8 @@ jobs:
         shell: wsl-bash {0}
         run: |
           mkdir build
+          BUILD=$(realpath build)
           tar zxf *.tgz -C build
           cd repos/ffmpeg
-          PKG_CONFIG_PATH=../../build/lib/pkgconfig ./configure --toolchain=msvc --extra-cflags="-MDd -I../../build/include" --extra-ldflags="-LIBPATH:../../build/lib" --prefix=../../build --pkg-config-flags="--static" --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --disable-devices --disable-demuxers --disable-decoders --disable-network --enable-w32threads --enable-gpl --enable-libvpl
-          ls -laR ../../build
+          PKG_CONFIG_PATH=$BUILD/lib/pkgconfig ./configure --toolchain=msvc --extra-cflags="-MDd -I$BUILD/include" --extra-ldflags="-LIBPATH:$BUILD/lib" --prefix=$BUILD --pkg-config-flags="--static" --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --disable-devices --disable-demuxers --disable-decoders --disable-network --enable-w32threads --enable-gpl --enable-libvpl
+          ls -laR $BUILD