diff --git a/sprout/index_tuple/index_range.hpp b/sprout/index_tuple/index_range.hpp
index f9b1868f..9be27f8e 100644
--- a/sprout/index_tuple/index_range.hpp
+++ b/sprout/index_tuple/index_range.hpp
@@ -17,7 +17,9 @@ namespace sprout {
 	// index_range
 	// uindex_range
 	//
-#if SPROUT_USE_TEMPLATE_ALIASES && !defined(SPROUT_WORKAROUND_NO_TEMPLATE_ARGUMENT_DEDUCTION_WITH_ALIASES)
+// !!! for GCC 7.0.0 or later
+//#if SPROUT_USE_TEMPLATE_ALIASES && !defined(SPROUT_WORKAROUND_NO_TEMPLATE_ARGUMENT_DEDUCTION_WITH_ALIASES)
+#if SPROUT_USE_TEMPLATE_ALIASES && !defined(SPROUT_WORKAROUND_NO_TEMPLATE_ARGUMENT_DEDUCTION_WITH_ALIASES) && !SPROUT_GCC_OR_LATER(7, 0, 0)
 	template<
 		sprout::index_t First, sprout::index_t Last,
 		typename std::make_signed<sprout::index_t>::type Step = sprout::detail::integer_range_default_step<sprout::index_t, First, Last>::value