diff --git a/common/environment/setup/sourcepkg.sh b/common/environment/setup/sourcepkg.sh
index e0e16d7915cb90..e1bbce7491c589 100644
--- a/common/environment/setup/sourcepkg.sh
+++ b/common/environment/setup/sourcepkg.sh
@@ -8,6 +8,7 @@ unset -v configure_script configure_args wrksrc build_wrksrc create_wrksrc
 unset -v make_build_args make_check_args make_install_args
 unset -v make_build_target make_check_target make_install_target
 unset -v make_cmd meson_cmd gem_cmd fetch_cmd make_check_pre
+unset -v CMAKE_GENERATOR
 unset -v python_version stackage
 unset -v cmake_builddir meson_builddir
 unset -v meson_crossfile