diff --git a/mingw-w64-python-testpath/PKGBUILD b/mingw-w64-python-testpath/PKGBUILD
index 1bf77c644f..bdc9baa97e 100644
--- a/mingw-w64-python-testpath/PKGBUILD
+++ b/mingw-w64-python-testpath/PKGBUILD
@@ -43,4 +43,7 @@ package() {
 
   cd "${srcdir}/${_realname}-${pkgver}"
   install -Dm644 LICENSE "${pkgdir}${MINGW_PREFIX}/share/licenses/python-${_realname}/LICENSE"
+
+  MSYS2_ARG_CONV_EXCL="-p" python -m compileall \
+    -o 0 -o 1 -q -s"${pkgdir}" -p"/" "${pkgdir}${MINGW_PREFIX}/lib/python"*
 }