diff --git a/include/rua/io/util.hpp b/include/rua/io/util.hpp
index 4ce16f8..1efe784 100644
--- a/include/rua/io/util.hpp
+++ b/include/rua/io/util.hpp
@@ -265,7 +265,7 @@ class read_group : public stream_base {
 	read_group(std::initializer_list<stream_i> r_li, size_t buf_sz = 1024) :
 		read_group(buf_sz) {
 		for (auto &r : r_li) {
-			add(std::move(r));
+			add(r);
 		}
 	}
 
diff --git a/include/rua/sync/promise.hpp b/include/rua/sync/promise.hpp
index c9d5d36..9bb9700 100644
--- a/include/rua/sync/promise.hpp
+++ b/include/rua/sync/promise.hpp
@@ -81,6 +81,9 @@ class promise<T, void> {
 			notify();
 			break;
 		}
+
+		default:
+			break;
 		}
 	}