diff --git a/sprout/string.hpp b/sprout/string.hpp
index fb2f3adc..a02490f4 100644
--- a/sprout/string.hpp
+++ b/sprout/string.hpp
@@ -903,29 +903,6 @@ namespace sprout {
 		return sprout::fixed::append_back(lhs, rhs);
 	}
 
-#if 0
-	//
-	// string
-	//
-	template<std::size_t N>
-	using string = sprout::basic_string<char, N>;
-	//
-	// wstring
-	//
-	template<std::size_t N>
-	using wstring = sprout::basic_string<wchar_t, N>;
-	//
-	// u16string
-	//
-	template<std::size_t N>
-	using u16string = sprout::basic_string<char16_t, N>;
-	//
-	// u32string
-	//
-	template<std::size_t N>
-	using u32string = sprout::basic_string<char32_t, N>;
-#endif	// #if 0
-
 	//
 	// string_t
 	//
diff --git a/sprout/string/alias.hpp b/sprout/string/alias.hpp
new file mode 100644
index 00000000..c981d131
--- /dev/null
+++ b/sprout/string/alias.hpp
@@ -0,0 +1,31 @@
+#ifndef SPROUT_STRING_ALIAS_HPP
+#define SPROUT_STRING_ALIAS_HPP
+
+#include <cstddef>
+#include <sprout/config.hpp>
+#include <sprout/string.hpp>
+
+namespace sprout {
+	//
+	// string
+	//
+	template<std::size_t N>
+	using string = sprout::basic_string<char, N>;
+	//
+	// wstring
+	//
+	template<std::size_t N>
+	using wstring = sprout::basic_string<wchar_t, N>;
+	//
+	// u16string
+	//
+	template<std::size_t N>
+	using u16string = sprout::basic_string<char16_t, N>;
+	//
+	// u32string
+	//
+	template<std::size_t N>
+	using u32string = sprout::basic_string<char32_t, N>;
+}	// namespace sprout
+
+#endif	// #ifndef SPROUT_STRING_ALIAS_HPP