diff --git a/build-win32.sh b/build-win32.sh
index 1339329..83dfac4 100755
--- a/build-win32.sh
+++ b/build-win32.sh
@@ -1,4 +1,5 @@
 export FFBUILD_FLAGS="--enable-ffnvcodec --enable-dxva2 --enable-amf --enable-libmfx"
 export FFBUILD_PLATFORM="win"
+export MFX_HOST=i686-w64-mingw32
 
 FFMPEG_OS=mingw32 OPENH264_ARCH=i686 OPENH264_OS=mingw_nt CC=i686-w64-mingw32-gcc CXX=i686-w64-mingw32-g++ AR=i686-w64-mingw32-gcc-ar bash build.sh --arch i686