diff --git a/mingw-w64-python-pywin32/PKGBUILD b/mingw-w64-python-pywin32/PKGBUILD
index b781952de19a4..9831b4870357a 100644
--- a/mingw-w64-python-pywin32/PKGBUILD
+++ b/mingw-w64-python-pywin32/PKGBUILD
@@ -26,6 +26,7 @@ build() {
         msg2 "Synchronizing ${_python} build directory"
         rsync --recursive --times "${srcdir}/${_realname}-${pkgver}"/* "${srcdir}/build-${_python}-${CARCH}-${_realname}-${pkgver}"
         cd "${srcdir}/build-${_python}-${CARCH}-${_realname}-${pkgver}"
+        CFLAGS="-Wno-narrowing -fno-operator-names -fpermissive" \
         LIB="${MINGW_PREFIX}/lib:${MINGW_PREFIX}/${CARCH}-w64-mingw32/lib" \
         INCLUDE="${MINGW_PREFIX}/include:${MINGW_PREFIX}/${CARCH}-w64-mingw32/include" \
         ${MINGW_PREFIX}/bin/${_python} setup.py build --compiler=mingw32