diff --git a/include/pybind11/stl.h b/include/pybind11/stl.h
index ab30ecac0..8710de014 100644
--- a/include/pybind11/stl.h
+++ b/include/pybind11/stl.h
@@ -370,12 +370,19 @@ struct variant_caster<V<Ts...>> {
 
     template <typename U, typename... Us>
     bool load_alternative(handle src, bool convert, type_list<U, Us...>) {
+#if defined(__MINGW32__)
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
         auto caster = make_caster<U>();
         if (caster.load(src, convert)) {
             value = cast_op<U>(std::move(caster));
             return true;
         }
         return load_alternative(src, convert, type_list<Us...>{});
+#if defined(__MINGW32__)
+#    pragma GCC diagnostic pop
+#endif
     }
 
     bool load_alternative(handle, bool, type_list<>) { return false; }