diff --git a/include/sqlpp11/char_sequence.h b/include/sqlpp11/char_sequence.h
index 97a74e93..ba05d749 100644
--- a/include/sqlpp11/char_sequence.h
+++ b/include/sqlpp11/char_sequence.h
@@ -43,7 +43,7 @@ namespace sqlpp
 	template<std::size_t N, const char (&s) [N], typename T>
 		struct make_char_sequence_impl;
 
-	template<std::size_t N, const char (&s) [N], size_t... i>
+	template<std::size_t N, const char (&s) [N], std::size_t... i>
 		struct make_char_sequence_impl<N, s, sqlpp::detail::index_sequence<i...>>
 		{
 			using type = char_sequence<s[i]...>;